题目内容
计算:
÷(x+3)•
| 2x-6 |
| 4-4x+x2 |
| x2+x-6 |
| 3-x |
原式=
×
×
(5分)
=-
.(7分)
| 2(x-3) |
| (x-2)2 |
| 1 |
| x+3 |
| (x+3)(x-2) |
| -(x-3) |
=-
| 2 |
| x-2 |
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题目内容
| 2x-6 |
| 4-4x+x2 |
| x2+x-6 |
| 3-x |
| 2(x-3) |
| (x-2)2 |
| 1 |
| x+3 |
| (x+3)(x-2) |
| -(x-3) |
| 2 |
| x-2 |