DANH MỤC ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT - PHẦN 1

<div class="pf-content"><span style="color: red;"><strong style="color: #757575;">DANH MỤC ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT -</strong><strong style="color: #757575;"> PHẦN 1</strong><strong style="color: #757575;"> </strong></span><br /><br /><a name="more"></a><br /><br /><table><tbody><tr><td width="61"><span style="color: red;"><strong>STT</strong></span></td><td style="text-align: center;" width="498"><span style="color: red;"><strong>ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT -</strong><strong> PHẦN 1</strong><strong> </strong></span></td><td style="text-align: center;" width="79"><span style="color: red;"><strong>TẢI VỀ </strong></span></td></tr><tr><td width="61"><strong>1</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT </strong>- ĐỀ SỐ 1 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 CHUYÊN TOÁN THPT</div><br /></td><td width="79"><a href="http://tailieusupham.com/de-thi-vao-lop-10-chuyen-toan-thpt-de-1/" title="ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT – ĐỀ SỐ 1"><strong>chi tiết</strong></a></td></tr><tr><td width="61"><strong>2</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT </strong> – ĐỀ SỐ 2 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 CHUYÊN TOÁN THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-vao-lop-10-chuyen-toan-thpt-de-2/" title="ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT – ĐỀ SỐ 2"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>3</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT </strong> – ĐỀ SỐ 3 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 CHUYÊN TOÁN  THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-vao-lop-10-chuyen-toan-thpt-de-3/" title="ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT – ĐỀ SỐ 3"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>4</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT </strong> – ĐỀ SỐ 4 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 CHUYÊN TOÁN THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-vao-lop-10-chuyen-toan-thpt-de-4/" title="ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT – ĐỀ SỐ 4"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>5</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT  </strong>- ĐỀ SỐ 5 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 CHUYÊN TOÁN THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-vao-lop-10-chuyen-toan-thpt-de-5/" title="ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT – ĐỀ SỐ 5"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>6</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT </strong> – ĐỀ SỐ 6 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 CHUYÊN TOÁN THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-vao-lop-10-chuyen-toan-thpt-de-6/" title="ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT – ĐỀ SỐ 6"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>7</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT </strong> – ĐỀ SỐ 7 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 CHUYÊN TOÁN THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-vao-lop-10-chuyen-toan-thpt-de-7/" title="ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT – ĐỀ SỐ 7"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>8</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT </strong> – ĐỀ SỐ 8 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 CHUYÊN TOÁN THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-vao-lop-10-chuyen-toan-thpt-de-8/" title="ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT – ĐỀ SỐ 8"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>9</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT </strong> – ĐỀ SỐ 9 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 CHUYÊN TOÁN THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-vao-lop-10-chuyen-toan-thpt-de-9/" title="ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT – ĐỀ SỐ 9"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>10</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT </strong> – ĐỀ SỐ 10 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 CHUYÊN TOÁN THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-vao-lop-10-chuyen-toan-thpt-de-10/" title="ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT – ĐỀ SỐ 10"><strong>chi tiết</strong></a></div><br /></td></tr></tbody></table><br /><br /></div><br /><a href="http://tailieusupham.com/danh-muc-de-thi-vao-lop-10-chuyen-toan-thpt-phan-1/">DANH MỤC ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT - PHẦN 1 </a>

DANH MỤC ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT - PHẦN 1

DANH MỤC ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT -  PHẦN 1   STT ĐỀ ÔN THI VÀO LỚP 10 CHUYÊN TOÁN THPT - PHẦN 1   TẢI VỀ 1 ĐỀ ÔN THI VÀO LỚP ...

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DANH MỤC ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT - PHẦN 4

<div class="pf-content"><div class="separator" style="clear: both; text-align: center;"><a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgqca5iYNL6NhbmdTxSHnVDtZ5TkYqSz550DtV-gwcCylzp8tco9JkwMYOdBZouyBADcJzQCdIXbiDpqrX5GNhIUcf63VJkUX_7DI7J9Ucpr9RvdRqgxFuJWfLIFRooFgYlm_hnxZT0ZNM/s1600/download.jpg" imageanchor="1" style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"><img border="0" height="50" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgqca5iYNL6NhbmdTxSHnVDtZ5TkYqSz550DtV-gwcCylzp8tco9JkwMYOdBZouyBADcJzQCdIXbiDpqrX5GNhIUcf63VJkUX_7DI7J9Ucpr9RvdRqgxFuJWfLIFRooFgYlm_hnxZT0ZNM/s1600/download.jpg" width="200" /></a></div><strong style="color: #757575;"><br /></strong><strong style="color: #757575;"><br /></strong><strong style="color: #757575;">DANH MỤC ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT -</strong><strong style="color: #757575;"> PHẦN 4</strong><strong style="color: #757575;"> </strong><br /><br /><br /><br /><a name="more"></a><br /><br /><br /><br /><br /><table><tbody><tr><td width="61"><strong>STT</strong></td><td width="498"><br /><div style="text-align: center;"><strong>ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT -</strong><strong> PHẦN 4</strong></div><br /></td><td width="79"><br /><div style="text-align: center;"><strong>TẢI VỀ </strong></div><br /></td></tr><tr><td width="61"><strong>1</strong></td><td style="text-align: justify;" width="498"><strong>ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT </strong>- ĐỀ SỐ 31 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 THPT</td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-mon-toan-vao-lop-10-thpt-de-31/" title="ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT – ĐỀ SỐ 31"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>2</strong></td><td style="text-align: justify;" width="498"><strong>ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT </strong>- ĐỀ SỐ 32 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 THPT</td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-mon-toan-vao-lop-10-thpt-de-32/" title="ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT – ĐỀ SỐ 32"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>3</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT </strong>- ĐỀ SỐ 33 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-mon-toan-vao-lop-10-thpt-de-33/" title="ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT – ĐỀ SỐ 33"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>4</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT </strong>- ĐỀ SỐ 34 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-mon-toan-vao-lop-10-thpt-de-34/" title="ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT – ĐỀ SỐ 34"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>5</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT </strong>- ĐỀ SỐ 35 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-mon-toan-vao-lop-10-thpt-de-35/" title="ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT – ĐỀ SỐ 35"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>6</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT </strong>- ĐỀ SỐ 36 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-mon-toan-vao-lop-10-thpt-de-36/" title="ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT – ĐỀ SỐ 36"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>7</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT </strong>- ĐỀ SỐ 37 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-mon-toan-vao-lop-10-thpt-de-37/" title="ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT – ĐỀ SỐ 37"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>8</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT </strong>- ĐỀ SỐ 38 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-mon-toan-vao-lop-10-thpt-de-38/" title="ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT – ĐỀ SỐ 38"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>9</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT </strong>- ĐỀ SỐ 39 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-mon-toan-vao-lop-10-thpt-de-39/" title="ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT – ĐỀ SỐ 39"><strong>chi tiết</strong></a></div><br /></td></tr><tr><td width="61"><strong>10</strong></td><td width="498"><br /><div style="text-align: justify;"><strong>ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT </strong>- ĐỀ SỐ 40 ( Đề ôn thi có kèm theo hướng dẫn giải chi tiết và lời bình) Tài liệu dành cho giáo viên tham khảo  và học sinh yêu thích bộ môn Toán tự luyện thi vào lớp 10 THPT</div><br /></td><td width="79"><br /><div style="text-align: center;"><a href="http://tailieusupham.com/de-thi-mon-toan-vao-lop-10-thpt-de-40/" title="ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT – ĐỀ SỐ 40"><strong>chi tiết</strong></a></div><br /></td></tr></tbody></table><br /><br /></div><br /><a href="http://tailieusupham.com/danh-muc-de-thi-mon-toan-vao-lop-10-thpt-phan-4/">DANH MỤC ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT - PHẦN 4 </a>

DANH MỤC ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT - PHẦN 4

DANH MỤC ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT -  PHẦN 4   STT ĐỀ ÔN THI MÔN TOÁN VÀO LỚP 10 THPT - PHẦN 4 TẢI VỀ 1 ĐỀ ÔN THI MÔN TOÁN VÀO LỚP...

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Đề thi tuyển sinh vào lớp 10 trường chuyên Đại học Khoa học Huế 2014-2015.

<br> <div class="separator" style="background-color: white; clear: both; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg8e3aOeCYpuSHO-TrCy6s52JYqz7H94eVj1kMU8K43hKafStNh0HV_BPHBIO1KywjXA2cg4TbZl_MhMJ4D05jLyuA6CpCFL6xShRuUsWDuRLVPPSsi8FCF7soDHD5xlv78QsuMKy79Mr8/s1600/617293761366163073_small.jpg" imageanchor="1" style="clear: left; color: #004d99; float: left; margin-bottom: 1em; margin-right: 1em; text-decoration: none;"><img border="0" height="240" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEg8e3aOeCYpuSHO-TrCy6s52JYqz7H94eVj1kMU8K43hKafStNh0HV_BPHBIO1KywjXA2cg4TbZl_MhMJ4D05jLyuA6CpCFL6xShRuUsWDuRLVPPSsi8FCF7soDHD5xlv78QsuMKy79Mr8/s1600/617293761366163073_small.jpg" style="border: 1px solid rgb(204, 204, 204); max-width: 600px; padding: 2px;" width="320"></a></div> <b style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;">Đề thi tuyển sinh vào lớp 10 trường chuyên Đại học Khoa học Huế 2014-2015.</b><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;"><b style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;"><br></b><span style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;"></span><b style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;"></b><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;"><a href="https://www.blogger.com/null" name="more" style="background-color: white; color: #004d99; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;"></a><br>

Đề thi tuyển sinh vào lớp 10 trường chuyên Đại học Khoa học Huế 2014-2015.

Đề thi tuyển sinh vào lớp 10 trường chuyên Đại học Khoa học Huế 2014-2015.

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Đề thi tuyển sinh vào lớp 10 trường chuyên Lê Quý Đôn, Bà Rịa - Vũng Tàu năm học 2014-2015.

<br> <div class="separator" style="background-color: white; clear: both; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgrR_xN-vwr2WvJFrVunEDF8ix-O1rxTwxFCGEPE9HblyogAklE7Fk2G1oNHf1Vi57CgElEAKz-FCMkE6GhhIOVYGihO5qbHtv1KC_B7cdc6ywd-15uU9CGGP6uJkbsBTq3xf59yLIZ38/s1600/Thi-vao-lop-10_.jpg" imageanchor="1" style="clear: left; color: #004d99; float: left; margin-bottom: 1em; margin-right: 1em; text-decoration: none;"><img border="0" height="143" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgrR_xN-vwr2WvJFrVunEDF8ix-O1rxTwxFCGEPE9HblyogAklE7Fk2G1oNHf1Vi57CgElEAKz-FCMkE6GhhIOVYGihO5qbHtv1KC_B7cdc6ywd-15uU9CGGP6uJkbsBTq3xf59yLIZ38/s1600/Thi-vao-lop-10_.jpg" style="border: 1px solid rgb(204, 204, 204); max-width: 600px; padding: 2px;" width="200"></a></div> <b style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;">Đề thi tuyển sinh vào lớp 10 trường chuyên Lê Quý Đôn, Bà Rịa - Vũng Tàu năm học 2014-2015.</b><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;"><b style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;"><br></b><span style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;"></span><b style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;"></b><br>

Đề thi tuyển sinh vào lớp 10 trường chuyên Lê Quý Đôn, Bà Rịa - Vũng Tàu năm học 2014-2015.

Đề thi tuyển sinh vào lớp 10 trường chuyên Lê Quý Đôn, Bà Rịa - Vũng Tàu năm học 2014-2015.

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Đề thi vào lớp 10 năm học 2014 - 2015 trường THPT chuyên Đại học Khoa học Tự nhiên Hà Nội.

<br> <div class="separator" style="background-color: white; clear: both; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh7YH-s_kiHR824ZgkLCQcAfdOsE4F_RRyv7cyrhaanK6U5XZvL5CkCEyc77aHq3HCWhP0eM4oU2kAWZvP-E0yTwyV48uP7FePstrEDhBqMECE5DgKft2jUPQCcaIZBFfFdGqmnO6JZwNks/s1600/download.jpg" imageanchor="1" style="clear: left; color: #004d99; float: left; margin-bottom: 1em; margin-right: 1em; text-decoration: none;"><img border="0" height="165" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEh7YH-s_kiHR824ZgkLCQcAfdOsE4F_RRyv7cyrhaanK6U5XZvL5CkCEyc77aHq3HCWhP0eM4oU2kAWZvP-E0yTwyV48uP7FePstrEDhBqMECE5DgKft2jUPQCcaIZBFfFdGqmnO6JZwNks/s1600/download.jpg" style="border: 1px solid rgb(204, 204, 204); max-width: 600px; padding: 2px;" width="200"></a></div> <b style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;">Đề thi vào lớp 10 năm học 2014 - 2015 trường THPT chuyên Đại học Khoa học Tự nhiên Hà Nội.</b><br> <b style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></b><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;"> <a href="https://www.blogger.com/null" name="more" style="background-color: white; color: #004d99; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px; text-decoration: none;"></a><b style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></b><br>

Đề thi vào lớp 10 năm học 2014 - 2015 trường THPT chuyên Đại học Khoa học Tự nhiên Hà Nội.

Đề thi vào lớp 10 năm học 2014 - 2015 trường THPT chuyên Đại học Khoa học Tự nhiên Hà Nội.

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Đề tuyển sinh vào 10 các trường THPT chuyên tỉnh Quảng Nam năm học 2014-2015

<br /> <div class="separator" style="background-color: white; clear: both; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px; text-align: center;"> <a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgrR_xN-vwr2WvJFrVunEDF8ix-O1rxTwxFCGEPE9HblyogAklE7Fk2G1oNHf1Vi57CgElEAKz-FCMkE6GhhIOVYGihO5qbHtv1KC_B7cdc6ywd-15uU9CGGP6uJkbsBTq3xf59yLIZ38/s1600/Thi-vao-lop-10_.jpg" imageanchor="1" style="clear: left; color: #004d99; float: left; margin-bottom: 1em; margin-right: 1em; text-decoration: none;"><img border="0" height="143" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjgrR_xN-vwr2WvJFrVunEDF8ix-O1rxTwxFCGEPE9HblyogAklE7Fk2G1oNHf1Vi57CgElEAKz-FCMkE6GhhIOVYGihO5qbHtv1KC_B7cdc6ywd-15uU9CGGP6uJkbsBTq3xf59yLIZ38/s1600/Thi-vao-lop-10_.jpg" style="border: 1px solid rgb(204, 204, 204); max-width: 600px; padding: 2px;" width="200" /></a></div> <b style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;">Đề tuyển sinh vào 10 các trường THPT chuyên tỉnh Quảng Nam năm học 2014-2015</b><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><b style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;"></b><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><a href="https://www.blogger.com/null" name="more" style="background-color: white; color: #004d99; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;"></a><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><a href="https://www.blogger.com/null" name="more" style="background-color: white; color: #004d99; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px; text-decoration: none;"></a><b style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;"><br style="color: #444444; font-family: Arial; line-height: 20.399999618530273px; margin: 0px; padding: 0px;" /></b><b style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;">Câu 1</b><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">.</span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">a/ Cho </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-35-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-359" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 11.917em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 8.83em;"><span style="-webkit-transition: none; border: 0px; clip: rect(0.25em 1000.003em 3.522em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-360" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-361" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">a</span><span class="mo" id="MathJax-Span-362" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">=</span><span class="mfrac" id="MathJax-Span-363" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px 0.127em; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 6.67em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.176em 1000.003em 2.781em -0.491em); left: 54.015625px; margin: 0px 0px 0px -3.207em; padding: 0px; position: absolute; top: -3.022em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-364" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-365" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">1</span><span class="mo" id="MathJax-Span-366" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">−</span><span class="mo" id="MathJax-Span-367" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">(</span><span class="msqrt" id="MathJax-Span-368" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.929em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.552em); left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-369" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-370" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">6</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.867em 1000.003em 1.299em -0.552em); left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -1.602em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.373em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.059em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(3.275em 1000.003em 4.324em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">√</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-371" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">−</span><span class="msqrt" id="MathJax-Span-372" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.929em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.491em); left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-373" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-374" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.867em 1000.003em 1.299em -0.552em); left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -1.602em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.373em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.059em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(3.275em 1000.003em 4.324em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">√</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-375" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">)</span><span class="msqrt" id="MathJax-Span-376" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 2.596em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.423em 1000.003em 2.472em -0.491em); left: 0.682em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-377" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-378" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2</span><span class="mo" id="MathJax-Span-379" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">+</span><span class="msqrt" id="MathJax-Span-380" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.929em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.552em); left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-381" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-382" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">3</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.867em 1000.003em 1.299em -0.552em); left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -1.602em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.373em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.059em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(3.275em 1000.003em 4.324em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">√</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.867em 1000.003em 1.299em -0.552em); left: 0.682em; margin: 0px; padding: 0px; position: absolute; top: -1.849em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 1.917em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.059em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(3.028em 1000.003em 4.633em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Size2; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">√</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(1.114em 1000.003em 2.781em -0.491em); left: 54.015625px; margin: 0px 0px 0px -3.269em; padding: 0px; position: absolute; top: -1.417em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-383" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="msqrt" id="MathJax-Span-384" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 2.966em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.423em 1000.003em 2.472em -0.552em); left: 0.682em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-385" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-386" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">6</span><span class="mo" id="MathJax-Span-387" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">−</span><span class="mn" id="MathJax-Span-388" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">4</span><span class="msqrt" id="MathJax-Span-389" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.929em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.491em); left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-390" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-391" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.867em 1000.003em 1.299em -0.552em); left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -1.602em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.373em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.059em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(3.275em 1000.003em 4.324em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">√</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.867em 1000.003em 1.299em -0.552em); left: 0.682em; margin: 0px; padding: 0px; position: absolute; top: -1.849em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 2.287em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.059em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(3.028em 1000.003em 4.633em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Size2; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">√</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-392" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">+</span><span class="msqrt" id="MathJax-Span-393" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 2.966em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.423em 1000.003em 2.472em -0.552em); left: 0.682em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-394" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-395" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">3</span><span class="mo" id="MathJax-Span-396" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">−</span><span class="mn" id="MathJax-Span-397" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2</span><span class="msqrt" id="MathJax-Span-398" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.929em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.491em); left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-399" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-400" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.867em 1000.003em 1.299em -0.552em); left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -1.602em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.373em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.059em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(3.275em 1000.003em 4.324em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">√</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.867em 1000.003em 1.299em -0.552em); left: 0.682em; margin: 0px; padding: 0px; position: absolute; top: -1.849em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 2.287em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.059em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(3.028em 1000.003em 4.633em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Size2; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">√</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.806em 1000.003em 1.238em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -1.293em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 6.67em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0.003em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 4.087em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -1.662em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">. Tính giá trị biểu thức </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-36-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-401" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 12.349em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 9.139em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.052em 1000.003em 2.596em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-402" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-403" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">M<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span><span class="mo" id="MathJax-Span-404" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">=</span><span class="mo" id="MathJax-Span-405" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">(</span><span class="msubsup" id="MathJax-Span-406" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.929em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.546em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-407" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">a</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.497em; margin: 0px; padding: 0px; position: absolute; top: -2.528em; transition: none; vertical-align: 0px;"><span class="texatom" id="MathJax-Span-408" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-409" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-410" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2</span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-411" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">+</span><span class="mi" id="MathJax-Span-412" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">a</span><span class="mo" id="MathJax-Span-413" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">−</span><span class="mn" id="MathJax-Span-414" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">1</span><span class="msubsup" id="MathJax-Span-415" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.917em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.596em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-416" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">)</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.373em; margin: 0px; padding: 0px; position: absolute; top: -2.651em; transition: none; vertical-align: 0px;"><span class="texatom" id="MathJax-Span-417" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-418" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-419" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2014</span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.838em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.413em; width: 0px;"></span></span></nobr></span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">b/Cho </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-37-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-420" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.102em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.546em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.546em 1000.003em 2.534em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-421" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-422" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span><span class="mo" id="MathJax-Span-423" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">,</span><span class="mi" id="MathJax-Span-424" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.004em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.329em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> là các số nguyên dương và </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-38-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-425" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 4.448em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 3.275em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.114em 1000.003em 2.534em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-426" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="msubsup" id="MathJax-Span-427" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.991em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.546em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-428" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -2.528em; transition: none; vertical-align: 0px;"><span class="texatom" id="MathJax-Span-429" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-430" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-431" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2</span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-432" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">+</span><span class="mn" id="MathJax-Span-433" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">2</span><span class="mi" id="MathJax-Span-434" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.588em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.329em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> là số chính phương. Chứng minh rằng </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-39-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-435" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 3.769em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 2.781em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.114em 1000.003em 2.534em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-436" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="msubsup" id="MathJax-Span-437" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.991em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.546em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-438" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -2.528em; transition: none; vertical-align: 0px;"><span class="texatom" id="MathJax-Span-439" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-440" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-441" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2</span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-442" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">+</span><span class="mi" id="MathJax-Span-443" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.588em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.329em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> bằng tổng 2 số chính phương.</span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><b style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;">Câu 2</b><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">.</span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">a/ Giải phương trình sau: </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-40-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-444" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 18.769em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 13.892em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.052em 1000.003em 3.028em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-445" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-446" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px 0.127em; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 4.448em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.491em); left: 36.015625px; margin: 0px 0px 0px -0.182em; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-447" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(1.423em 1000.003em 2.534em -0.491em); left: 36.015625px; margin: 0px 0px 0px -2.157em; padding: 0px; position: absolute; top: -1.664em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-448" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="msqrt" id="MathJax-Span-449" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.855em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.41em -0.552em); left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-450" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-451" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span><span class="mo" id="MathJax-Span-452" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">+</span><span class="mn" id="MathJax-Span-453" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">1</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.867em 1000.003em 1.299em -0.552em); left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -1.602em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 1.299em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.059em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(3.275em 1000.003em 4.324em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">√</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-454" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">+</span><span class="msqrt" id="MathJax-Span-455" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.855em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.552em); left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-456" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-457" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">3</span><span class="mo" id="MathJax-Span-458" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">−</span><span class="mi" id="MathJax-Span-459" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.867em 1000.003em 1.299em -0.552em); left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -1.602em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 1.299em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.059em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(3.275em 1000.003em 4.324em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">√</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.806em 1000.003em 1.238em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -1.293em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 4.448em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0.003em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-460" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">−</span><span class="msqrt" id="MathJax-Span-461" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 6.052em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.41em -0.491em); left: 0.991em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-462" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-463" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">3</span><span class="mo" id="MathJax-Span-464" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">+</span><span class="mn" id="MathJax-Span-465" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">2</span><span class="mi" id="MathJax-Span-466" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span><span class="mo" id="MathJax-Span-467" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">−</span><span class="msubsup" id="MathJax-Span-468" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.991em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.546em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-469" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -2.466em; transition: none; vertical-align: 0px;"><span class="texatom" id="MathJax-Span-470" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-471" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-472" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2</span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(3.583em 1000.003em 4.077em -0.552em); left: 0.991em; margin: 0px; padding: 0px; position: absolute; top: -4.688em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 5.065em;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: -0.059em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 4.386em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 0.435em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 0.991em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 1.608em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 2.164em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 2.719em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 3.275em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 3.83em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(2.966em 1000.003em 4.571em -0.429em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -4.071em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Size1; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">√</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-473" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">=</span><span class="mn" id="MathJax-Span-474" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">1</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 2.337em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.996em; width: 0px;"></span></span></nobr></span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">b/ Giải hệ phương trình:</span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><br /> <div aria-readonly="true" class="MathJax_Display" role="textbox" style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 1em 0em; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; position: relative; text-align: center; width: 620px;"> <span class="MathJax" id="MathJax-Element-41-Frame" style="border: 0px; direction: ltr; display: inline; float: none; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; text-align: left; white-space: nowrap; word-spacing: normal; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-475" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 15.497em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 11.485em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.978em 1000.003em 5.312em -0.429em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -3.886em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-476" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-477" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-478" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0.003em;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Size4; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">{</span></span><span class="mtable" id="MathJax-Span-479" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px 0.188em; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 10.25em;"><span style="-webkit-transition: none; border: 0px; clip: rect(2.287em 1000.003em 5.25em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 10.25em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.114em 1000.003em 2.534em -0.552em); left: 83.015625px; margin: 0px 0px 0px -5.12em; padding: 0px; position: absolute; top: -2.836em; transition: none; vertical-align: 0px;"><span class="mtd" id="MathJax-Span-480" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-481" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="msubsup" id="MathJax-Span-482" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.052em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.546em 1000.003em 2.534em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-483" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.62em; margin: 0px; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="texatom" id="MathJax-Span-484" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-485" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-486" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2</span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-487" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">−</span><span class="mn" id="MathJax-Span-488" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">2</span><span class="mi" id="MathJax-Span-489" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-490" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">−</span><span class="mn" id="MathJax-Span-491" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">2</span><span class="mi" id="MathJax-Span-492" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span><span class="mi" id="MathJax-Span-493" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-494" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">+</span><span class="mn" id="MathJax-Span-495" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">4</span><span class="mi" id="MathJax-Span-496" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span><span class="mo" id="MathJax-Span-497" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">=</span><span class="mn" id="MathJax-Span-498" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">0</span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(1.114em 1000.003em 2.534em -0.491em); left: 83.015625px; margin: 0px 0px 0px -4.812em; padding: 0px; position: absolute; top: -1.293em; transition: none; vertical-align: 0px;"><span class="mtd" id="MathJax-Span-499" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-500" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="msubsup" id="MathJax-Span-501" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.991em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.546em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-502" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="texatom" id="MathJax-Span-503" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-504" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-505" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">3</span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-506" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">+</span><span class="mn" id="MathJax-Span-507" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">3</span><span class="msubsup" id="MathJax-Span-508" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.991em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.546em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-509" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="texatom" id="MathJax-Span-510" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-511" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-512" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2</span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-513" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">=</span><span class="msubsup" id="MathJax-Span-514" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.052em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.546em 1000.003em 2.534em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-515" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.62em; margin: 0px; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="texatom" id="MathJax-Span-516" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-517" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-518" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2</span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-519" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">−</span><span class="mi" id="MathJax-Span-520" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-521" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">+</span><span class="mn" id="MathJax-Span-522" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">2</span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 3.892em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 4.254em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -1.746em; width: 0px;"></span></span></nobr></span></div> <br style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;" /><b style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;">Câu 3</b><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">.</span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">Cho các hàm số </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-42-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-523" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 8.83em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 6.546em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.052em 1000.003em 2.719em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-524" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-525" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-526" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">=</span><span class="mfrac" id="MathJax-Span-527" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px 0.127em; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.052em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.491em); left: 8.515625px; margin: 0px 0px 0px -0.429em; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-528" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-529" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">−</span><span class="mn" id="MathJax-Span-530" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">3</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.491em); left: 8.515625px; margin: 0px 0px 0px -0.182em; padding: 0px; position: absolute; top: -1.787em; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-531" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.806em 1000.003em 1.238em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -1.293em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 1.052em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0.003em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mi" id="MathJax-Span-532" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;">x</span><span class="mo" id="MathJax-Span-533" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">+</span><span class="mn" id="MathJax-Span-534" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">2</span><span class="mi" id="MathJax-Span-535" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">m</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.921em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.579em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> và </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-43-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-536" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 5.929em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 4.386em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.052em 1000.003em 2.781em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-537" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-538" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-539" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">=</span><span class="mfrac" id="MathJax-Span-540" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px 0.127em; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.052em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.491em); left: 8.515625px; margin: 0px 0px 0px -0.429em; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-541" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-542" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">−</span><span class="mn" id="MathJax-Span-543" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">3</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.552em); left: 8.515625px; margin: 0px 0px 0px -0.182em; padding: 0px; position: absolute; top: -1.725em; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-544" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">4</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.806em 1000.003em 1.238em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -1.293em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 1.052em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0.003em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="msubsup" id="MathJax-Span-545" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.991em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.546em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-546" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.559em; margin: 0px; padding: 0px; position: absolute; top: -2.528em; transition: none; vertical-align: 0px;"><span class="texatom" id="MathJax-Span-547" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-548" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-549" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2</span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.921em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.662em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> lần lượt có các đồ thị </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-44-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-550" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 1.793em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.299em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.596em -0.429em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-551" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-552" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">(</span><span class="mi" id="MathJax-Span-553" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">d<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-554" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">)</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.504em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.413em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> và </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-45-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-555" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.102em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.546em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.596em -0.429em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-556" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-557" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">(</span><span class="mi" id="MathJax-Span-558" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">P<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.127em;"></span></span><span class="mo" id="MathJax-Span-559" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">)</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.504em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.413em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">. Với giá trị nào của m thì </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-46-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-560" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 1.793em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.299em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.596em -0.429em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-561" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-562" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">(</span><span class="mi" id="MathJax-Span-563" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">d<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-564" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">)</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.504em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.413em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> cắt </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-47-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-565" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.102em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.546em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.596em -0.429em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-566" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-567" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">(</span><span class="mi" id="MathJax-Span-568" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">P<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.127em;"></span></span><span class="mo" id="MathJax-Span-569" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">)</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.504em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.413em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> tại 2 điểm phân biệt bên phải trục tung?</span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><b style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;">Câu 4</b><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">.</span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">Cho tam giác nhọn </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-48-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-570" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 3.09em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 2.287em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-571" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-572" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span><span class="mi" id="MathJax-Span-573" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span><span class="mi" id="MathJax-Span-574" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">C<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> và điểm </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-49-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-575" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 1.114em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.806em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-576" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-577" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">G</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> bất kì trong tam giác, qua </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-50-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-578" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 1.114em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.806em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-579" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-580" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">G</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> vẽ các tia vuông góc với </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-51-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-581" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.102em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.546em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-582" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-583" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span><span class="mi" id="MathJax-Span-584" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">C<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">, </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-52-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-585" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.102em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.546em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-586" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-587" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">C<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span><span class="mi" id="MathJax-Span-588" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">,</span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-53-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-589" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.04em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.485em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-590" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-591" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span><span class="mi" id="MathJax-Span-592" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> lần lượt cắt các cạnh đó tại </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-54-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-593" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 4.386em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 3.213em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.534em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-594" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-595" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">D</span><span class="mo" id="MathJax-Span-596" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">,</span><span class="mi" id="MathJax-Span-597" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;">E<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-598" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">,</span><span class="mi" id="MathJax-Span-599" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;">F<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.127em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.338em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.329em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">. Trên các tia </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-55-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-600" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 7.596em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 5.62em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.534em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-601" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-602" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">G</span><span class="mi" id="MathJax-Span-603" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">D</span><span class="mo" id="MathJax-Span-604" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">,</span><span class="mi" id="MathJax-Span-605" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;">G</span><span class="mi" id="MathJax-Span-606" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">E<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-607" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">,</span><span class="mi" id="MathJax-Span-608" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;">G</span><span class="mi" id="MathJax-Span-609" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">F<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.127em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.421em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.329em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> lấy các điểm </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-56-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-610" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 5.435em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 4.015em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.114em 1000.003em 2.534em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-611" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="msup" id="MathJax-Span-612" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.991em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-613" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.744em; margin: 0px; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-614" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">′</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-615" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">,</span><span class="msup" id="MathJax-Span-616" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.991em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-617" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.744em; margin: 0px; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-618" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">′</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-619" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">,</span><span class="msup" id="MathJax-Span-620" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.114em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-621" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">C<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.867em; margin: 0px; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-622" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">′</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.588em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.329em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> sao cho </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-57-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-623" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 10.682em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 7.904em;"><span style="-webkit-transition: none; border: 0px; clip: rect(0.929em 1000.003em 2.781em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-624" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mfrac" id="MathJax-Span-625" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px 0.127em; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.423em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.361em 1000.003em 2.349em -0.491em); left: 11.515625px; margin: 0px 0px 0px -0.614em; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-626" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-627" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">G</span><span class="msup" id="MathJax-Span-628" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.682em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-629" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.497em; margin: 0px; padding: 0px; position: absolute; top: -2.466em; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-630" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 8px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">′</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.552em); left: 11.515625px; margin: 0px 0px 0px -0.491em; padding: 0px; position: absolute; top: -1.725em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-631" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-632" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span><span class="mi" id="MathJax-Span-633" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">C<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.806em 1000.003em 1.238em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -1.293em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 1.423em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0.003em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-634" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">=</span><span class="mfrac" id="MathJax-Span-635" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px 0.127em; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.423em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.423em 1000.003em 2.349em -0.491em); left: 11.515625px; margin: 0px 0px 0px -0.614em; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-636" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-637" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">G</span><span class="msup" id="MathJax-Span-638" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.682em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-639" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.497em; margin: 0px; padding: 0px; position: absolute; top: -2.466em; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-640" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 8px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">′</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.491em); left: 11.515625px; margin: 0px 0px 0px -0.491em; padding: 0px; position: absolute; top: -1.725em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-641" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-642" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">C<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span><span class="mi" id="MathJax-Span-643" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.806em 1000.003em 1.238em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -1.293em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 1.423em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0.003em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-644" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">=</span><span class="mfrac" id="MathJax-Span-645" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px 0.127em; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.546em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.423em 1000.003em 2.349em -0.491em); left: 12.515625px; margin: 0px 0px 0px -0.676em; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-646" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-647" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">G</span><span class="msup" id="MathJax-Span-648" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.806em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-649" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">C<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.62em; margin: 0px; padding: 0px; position: absolute; top: -2.466em; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-650" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 8px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">′</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(1.485em 1000.003em 2.349em -0.552em); left: 12.515625px; margin: 0px 0px 0px -0.491em; padding: 0px; position: absolute; top: -1.725em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-651" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-652" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span><span class="mi" id="MathJax-Span-653" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.806em 1000.003em 1.238em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -1.293em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 1.546em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0.003em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 2.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.662em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">. Gọi </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-58-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-654" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 1.299em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.929em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-655" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-656" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">H<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.088em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> là điểm đõi xứng của </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-59-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-657" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 1.423em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.052em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.114em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-658" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="msup" id="MathJax-Span-659" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.991em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-660" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.744em; margin: 0px; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-661" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">′</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.338em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> qua </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-60-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-662" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 1.114em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.806em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-663" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-664" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">G</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">.</span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><br style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;" /><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">a/ Chứng minh </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-61-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-665" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 6.546em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 4.818em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.176em 1000.003em 2.596em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-666" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-667" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">H<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span><span class="msup" id="MathJax-Span-668" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.991em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-669" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.744em; margin: 0px; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-670" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">′</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="texatom" id="MathJax-Span-671" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-672" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-673" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">/</span></span></span><span class="texatom" id="MathJax-Span-674" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-675" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-676" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">/</span></span></span><span class="mi" id="MathJax-Span-677" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">G</span><span class="msup" id="MathJax-Span-678" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.114em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-679" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">C<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.867em; margin: 0px; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-680" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">′</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.588em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.413em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">.</span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">b/ Chứng minh </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-62-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-681" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 1.114em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.806em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-682" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-683" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">G</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> là trọng tâm </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-63-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-684" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 4.262em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 3.151em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.114em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-685" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="msup" id="MathJax-Span-686" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.991em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-687" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.744em; margin: 0px; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-688" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">′</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="msup" id="MathJax-Span-689" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.991em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-690" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.744em; margin: 0px; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-691" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">′</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="msup" id="MathJax-Span-692" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.114em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-693" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">C<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; left: 0.867em; margin: 0px; padding: 0px; position: absolute; top: -2.59em; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-694" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; font-size: 11px; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">′</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.338em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">.</span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><b style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;">Câu 5</b><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">.</span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">Cho tam giác nhọn </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-64-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-695" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 3.09em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 2.287em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-696" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-697" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span><span class="mi" id="MathJax-Span-698" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span><span class="mi" id="MathJax-Span-699" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">C<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">. Đườnng tròn </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-65-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-700" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.04em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.485em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.596em -0.429em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-701" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-702" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">(</span><span class="mi" id="MathJax-Span-703" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">O</span><span class="mo" id="MathJax-Span-704" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">)</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.504em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.413em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> đk </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-66-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-705" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.102em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.546em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-706" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-707" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span><span class="mi" id="MathJax-Span-708" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">C<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> cắt cạnh </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-67-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-709" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 4.694em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 3.46em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.534em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-710" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-711" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span><span class="mi" id="MathJax-Span-712" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span><span class="mo" id="MathJax-Span-713" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">,</span><span class="mi" id="MathJax-Span-714" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;">A</span><span class="mi" id="MathJax-Span-715" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">C<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.421em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.329em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> lần lượt tại </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-68-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-716" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.781em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 2.04em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.534em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-717" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-718" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">E<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-719" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">,</span><span class="mi" id="MathJax-Span-720" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;">D</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.338em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.329em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">; </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-69-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-721" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.102em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.546em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-722" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-723" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span><span class="mi" id="MathJax-Span-724" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">D</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.088em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> cắt </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-70-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-725" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.102em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.546em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-726" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-727" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">C<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span><span class="mi" id="MathJax-Span-728" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">E<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> tại </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-71-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-729" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 1.299em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.929em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-730" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-731" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">H<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.088em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">, </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-72-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-732" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.287em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.67em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-733" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-734" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span><span class="mi" id="MathJax-Span-735" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">H<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> cắt </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-73-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-736" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.102em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.546em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-737" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-738" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span><span class="mi" id="MathJax-Span-739" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">C<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> tại </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-74-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-740" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.744em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.559em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-741" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-742" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">I<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.088em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">. Vẽ các tiếp tuyến </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-75-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-743" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 5.25em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 3.892em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.534em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-744" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-745" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span><span class="mi" id="MathJax-Span-746" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">M<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span><span class="mo" id="MathJax-Span-747" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">,</span><span class="mi" id="MathJax-Span-748" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;">A</span><span class="mi" id="MathJax-Span-749" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">N<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.421em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.329em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> của đường tròn </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-76-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-750" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.04em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.485em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.596em -0.429em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-751" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-752" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">(</span><span class="mi" id="MathJax-Span-753" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">O</span><span class="mo" id="MathJax-Span-754" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">)</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.504em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.413em; width: 0px;"></span></span></nobr></span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">a/ Chứng minh </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-77-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-755" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 1.299em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.929em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-756" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-757" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">H<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.088em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> là tâm đường tròn nội tiếp </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-78-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-758" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.843em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 2.102em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-759" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-760" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">D</span><span class="mi" id="MathJax-Span-761" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">E<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span class="mi" id="MathJax-Span-762" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">I<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.088em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">.</span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">b/ Chứng minh 3 đường thẳng </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-79-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-763" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 7.966em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 5.867em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.534em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-764" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-765" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">M<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span><span class="mi" id="MathJax-Span-766" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">N<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span><span class="mo" id="MathJax-Span-767" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">,</span><span class="mi" id="MathJax-Span-768" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;">B</span><span class="mi" id="MathJax-Span-769" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">D</span><span class="mo" id="MathJax-Span-770" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">,</span><span class="mi" id="MathJax-Span-771" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;">C<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span><span class="mi" id="MathJax-Span-772" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">E<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.421em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.329em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> đồng quy.</span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><b style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;">Câu 6</b><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">.</span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">Trong hệ trục tọa độ </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-80-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-773" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.534em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.855em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.534em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-774" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-775" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">O</span><span class="mi" id="MathJax-Span-776" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span><span class="mi" id="MathJax-Span-777" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.421em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.329em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> có đường thẳng </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-81-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-778" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 10.497em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 7.781em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.596em -0.429em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-779" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mo" id="MathJax-Span-780" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">(</span><span class="mi" id="MathJax-Span-781" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">d<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-782" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">)</span><span class="mo" id="MathJax-Span-783" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">:</span><span class="mi" id="MathJax-Span-784" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-785" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">=</span><span class="mn" id="MathJax-Span-786" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">2014</span><span class="mo" id="MathJax-Span-787" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">−</span><span class="mi" id="MathJax-Span-788" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">x</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.504em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.413em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> cắt trục trục </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-82-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-789" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 1.793em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.299em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-790" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-791" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">O</span><span class="mi" id="MathJax-Span-792" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> tại </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-83-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-793" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 1.052em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.744em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-794" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-795" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">, </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-84-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-796" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 1.793em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.299em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.534em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-797" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-798" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">O</span><span class="mi" id="MathJax-Span-799" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.421em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.329em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> tại </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-85-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-800" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 1.052em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 0.744em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-801" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-802" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.088em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">. Một điểm </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-86-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-803" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 4.509em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 3.336em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.596em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-804" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-805" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">M<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.065em;"></span></span><span class="mo" id="MathJax-Span-806" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">(</span><span class="mi" id="MathJax-Span-807" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span><span class="mo" id="MathJax-Span-808" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">;</span><span class="mi" id="MathJax-Span-809" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span class="mo" id="MathJax-Span-810" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">)</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.504em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.413em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> di động trên đoạn </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-87-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-811" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.04em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.485em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.349em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-812" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-813" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span><span class="mi" id="MathJax-Span-814" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">B</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.171em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.079em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"> (không trùng với </span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><span aria-readonly="true" class="MathJax" id="MathJax-Element-88-Frame" role="textbox" style="background-color: white; border: 0px; color: #444444; direction: ltr; display: inline; float: none; font-family: Arial; font-size: 12px; line-height: 18px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; white-space: nowrap; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-815" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 2.596em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 1.917em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.238em 1000.003em 2.534em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-816" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-817" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">A</span><span class="mo" id="MathJax-Span-818" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">,</span><span class="mi" id="MathJax-Span-819" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;">B</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 1.421em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -0.329em; width: 0px;"></span></span></nobr></span><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;">), tìm GTNN của biểu thức:</span><br style="background-color: white; color: #424547; font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 18px;" /><span style="background-color: white; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px;"></span><span class="MathJax_Preview" style="background-color: white; border: 0px; color: #888888; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 0px; padding: 0px;"></span><br /> <div aria-readonly="true" class="MathJax_Display" role="textbox" style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 1em 0em; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; position: relative; text-align: center; width: 620px;"> <span class="MathJax" id="MathJax-Element-89-Frame" style="border: 0px; direction: ltr; display: inline; float: none; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; text-align: left; white-space: nowrap; word-spacing: normal; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" id="MathJax-Span-820" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 18.769em;"><span style="-webkit-transition: none; border: 0px; display: inline-block; font-size: 16px; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 13.892em;"><span style="-webkit-transition: none; border: 0px; clip: rect(0.867em 1000.003em 3.522em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-821" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-822" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">P<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.127em;"></span></span><span class="mo" id="MathJax-Span-823" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;">=</span><span class="mfrac" id="MathJax-Span-824" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px 0px 0px 0.312em; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px 0.127em; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 4.694em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.546em 1000.003em 2.349em -0.491em); left: 38.015625px; margin: 0px 0px 0px -0.244em; padding: 0px; position: absolute; top: -2.836em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-825" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">x</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(3.028em 1000.003em 4.386em -0.491em); left: 38.015625px; margin: 0px 0px 0px -2.281em; padding: 0px; position: absolute; top: -3.207em; transition: none; vertical-align: 0px;"><span class="msqrt" id="MathJax-Span-826" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 4.571em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.349em -0.491em); left: 0.806em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-827" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-828" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2014</span><span class="mo" id="MathJax-Span-829" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">−</span><span class="mi" id="MathJax-Span-830" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">x</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(3.583em 1000.003em 4.077em -0.552em); left: 0.806em; margin: 0px; padding: 0px; position: absolute; top: -4.565em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 3.769em;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: -0.059em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 3.09em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 0.435em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 0.991em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 1.485em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 2.04em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 2.596em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(3.028em 1000.003em 4.386em -0.491em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">√</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.806em 1000.003em 1.238em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -1.293em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 4.694em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0.003em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-831" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">+</span><span class="mfrac" id="MathJax-Span-832" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px 0.127em; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 4.88em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.546em 1000.003em 2.534em -0.552em); left: 39.515625px; margin: 0px 0px 0px -0.244em; padding: 0px; position: absolute; top: -2.836em; transition: none; vertical-align: 0px;"><span class="mi" id="MathJax-Span-833" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(2.966em 1000.003em 4.571em -0.429em); left: 39.515625px; margin: 0px 0px 0px -2.404em; padding: 0px; position: absolute; top: -3.207em; transition: none; vertical-align: 0px;"><span class="msqrt" id="MathJax-Span-834" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 4.756em;"><span style="-webkit-transition: none; border: 0px; clip: rect(1.299em 1000.003em 2.534em -0.491em); left: 0.991em; margin: 0px; padding: 0px; position: absolute; top: -2.157em; transition: none; vertical-align: 0px;"><span class="mrow" id="MathJax-Span-835" style="-webkit-transition: none; border: 0px; display: inline; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;"><span class="mn" id="MathJax-Span-836" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">2014</span><span class="mo" id="MathJax-Span-837" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">−</span><span class="mi" id="MathJax-Span-838" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Math-italic; margin: 0px; padding: 0px 0px 0px 0.25em; position: static; transition: none; vertical-align: 0px;">y<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0.003em;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(3.583em 1000.003em 4.077em -0.552em); left: 0.991em; margin: 0px; padding: 0px; position: absolute; top: -4.565em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 0px; margin: 0px; padding: 0px; position: relative; transition: none; vertical-align: 0px; width: 3.769em;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: -0.059em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 3.09em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 0.435em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 0.991em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 1.485em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 2.04em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Main; left: 2.596em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;">−<span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(2.966em 1000.003em 4.571em -0.429em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -4.009em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border: 0px; font-family: MathJax_Size1; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px;">√</span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 4.015em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span><span style="-webkit-transition: none; border: 0px; clip: rect(0.806em 1000.003em 1.238em -0.552em); left: 0.003em; margin: 0px; padding: 0px; position: absolute; top: -1.293em; transition: none; vertical-align: 0px;"><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 4.88em; display: inline-block; height: 1.25px; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: 0.003em; width: 0px;"></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 1.052em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span></span><span class="mo" id="MathJax-Span-839" style="-webkit-transition: none; border: 0px; display: inline; font-family: MathJax_Main; margin: 0px; padding: 0px 0px 0px 0.188em; position: static; transition: none; vertical-align: 0px;">.</span></span><span style="-webkit-transition: none; border: 0px; display: inline-block; height: 2.164em; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 0px;"></span></span></span><span style="-webkit-transition: none; border-left-style: solid; border-width: 0px 0px 0px 0.004em; display: inline-block; height: 3.337em; margin: 0px; overflow: hidden; padding: 0px; position: static; transition: none; vertical-align: -1.662em; width: 0px;"></span></span></nobr></span></div> <div aria-readonly="true" class="MathJax_Display" role="textbox" style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 1em 0em; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; position: relative; text-align: center; width: 620px;"> <span class="MathJax" style="border: 0px; direction: ltr; display: inline; float: none; line-height: normal; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; text-align: left; white-space: nowrap; word-spacing: normal; word-wrap: normal;"><nobr style="-webkit-transition: none; border: 0px; margin: 0px; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; transition: none; vertical-align: 0px;"><span class="math" style="-webkit-transition: none; border: 0px; display: inline-block; margin: 0px; padding: 0px; position: static; transition: none; vertical-align: 0px; width: 18.769em;"><br /></span></nobr></span></div> <div aria-readonly="true" class="MathJax_Display" role="textbox" style="background-color: white; border: 0px; color: #444444; font-family: Arial; font-size: 12px; line-height: 20.399999618530273px; margin: 1em 0em; max-height: none; max-width: none; min-height: 0px; min-width: 0px; padding: 0px; position: relative; text-align: center; width: 620px;"> <span style="background-color: #00495c; color: white; font-size: 14px; line-height: 30px; text-transform: uppercase;">XEM ĐIỂM THI VÀO LỚP 10 TẠI TỈNH QUẢNG NAM</span></div> <div class="nd_class_10" style="background-color: white; border: thin solid rgb(255, 7, 7); font-family: Verdana, Geneva, sans-serif; font-size: 12px; line-height: 30px; margin: 0px; padding: 25px 10px 10px; text-align: center;"> <div class="title_qc" style="color: #00495c; font-family: Arial; font-weight: bold; margin: 0px 0px 10px; padding: 0px;"> <span class="cp_key" style="color: #ec0303; font-size: 20px; margin: 0px; padding: 0px; position: relative; text-transform: uppercase; top: 2px;">SOẠN TIN: HBD  </span><span class="mt_sbd" style="color: #252324; font-size: 17px; font-weight: normal; margin: 0px; padding: 0px;"><b>34 sốbáodanh</b> </span><span class="cp_key_send" style="color: #252324; font-weight: normal; margin: 0px; padding: 0px;"><span class="send" style="margin: 0px; padding: 0px 5px;">gửi</span><a href="sms:8785?body=DTM [m%C3%A3 t%E1%BB%89nh] [s%E1%BB%91 b%C3%A1o danh]" style="background-color: #ec0303; background-image: linear-gradient(rgb(236, 3, 3) 0%, rgb(250, 15, 15) 100%); border-bottom-left-radius: 5px; border-bottom-right-radius: 5px; border-top-left-radius: 5px; border-top-right-radius: 5px; color: white; font-size: 20px; font-weight: bold; margin: 0px; padding: 4px 10px; text-decoration: none;">8785</a></span></div> <div class="nd_note" style="color: #252324; line-height: 19px; margin: 0px; padding: 0px; text-align: left;"> <div style="font-family: Arial;"> <strong style="font-family: Arial, Helvetica, sans-serif; margin: 0px; padding: 0px;">Trong đó</strong><span style="font-family: Arial, Helvetica, sans-serif;">:</span><span style="font-family: Arial, Helvetica, sans-serif; margin: 0px; padding: 0px;"> 34 là mã tỉnh của Tỉnh Quảng Nam; Số báo danh: Là số báo danh bạn cần xem điểm.</span></div> </div> <div class="nd_note" style="line-height: 19px; margin: 0px; padding: 0px; text-align: left;"> <div style="color: #252324;"> <span style="font-family: Arial, Helvetica, sans-serif;"><strong style="margin: 0px; padding: 0px;">Ví dụ</strong>: Bạn là thí sinh ở Tỉnh Quảng Nam và có số báo danh là 123456.</span></div> <div> <span style="font-family: Arial, Helvetica, sans-serif;"><span style="color: #252324;">Để xem điểm thi của bạn, soạn tin: </span><span style="color: red;"><span style="margin: 0px; padding: 0px;">HBD dấu cách </span>34 dấu cách 123456, gửi <span style="margin: 0px; padding: 0px;">8785</span></span></span></div> <div style="color: #252324; font-family: Arial;"> <span style="margin: 0px; padding: 0px;"><i style="color: #424547; font-family: Arial, Helvetica, sans-serif; line-height: 21px; margin: 0px;"><b><u style="margin: 0px;">Chú ý</u>:</b> Ngay từ bây giờ, bạn có thể gửi tin nhắn. Chúng tôi sẽ gửi kết quả điểm thi về điện thoại của bạn ngay khi kết quả được cập nhật.</i></span></div> <div style="color: #252324; font-family: Arial;"> <span style="margin: 0px; padding: 0px;"><i style="color: #424547; font-family: Arial, Helvetica, sans-serif; line-height: 21px; margin: 0px;">Chúc bạn thi đạt kết quả cao nhất trong kỳ thi <b><a href="http://thivaolop10.blogspot.com/" style="color: #004d99; text-decoration: none;" target="_blank">tuyển sinh lớp 10 năm 2014</a></b>!</i></span></div> </div> </div>

Đề tuyển sinh vào 10 các trường THPT chuyên tỉnh Quảng Nam năm học 2014-2015

Đề tuyển sinh vào 10 các trường THPT chuyên tỉnh Quảng Nam năm học 2014-2015 Câu 1 . a/ Cho  a = 1 − ( 6 √ − 2 √ ) 2 + 3 √ √ 6 − 4 2 √ √ ...

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