题目内容
已知关于x的二次三项式2x2+mx+n因式分解的结果是(2x-1)(x+
)，求m、n的值．
| 1 |
| 4 |
(2x-1)(x+
)
=2x2+
x-x-
=2x2-
x-
．
则m=-
，n=-
．
| 1 |
| 4 |
=2x2+
| 1 |
| 2 |
| 1 |
| 4 |
=2x2-
| 1 |
| 2 |
| 1 |
| 4 |
则m=-
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| 2 |
| 1 |
| 4 |
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