题目内容
计算:
-
.
| 3 |
| a-1 |
| 2 |
| 2-a |
| 3 |
| a-1 |
| 2 |
| 2-a |
| 3(a-2) |
| (a-1)(a-2) |
| 2(a-1) |
| (a-1)(a-2) |
| 3a-6+2a-2 |
| (a-1)(a-2) |
| 5a-8 |
| (a-1)(a-2) |
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题目内容
| 3 |
| a-1 |
| 2 |
| 2-a |
| 3 |
| a-1 |
| 2 |
| 2-a |
| 3(a-2) |
| (a-1)(a-2) |
| 2(a-1) |
| (a-1)(a-2) |
| 3a-6+2a-2 |
| (a-1)(a-2) |
| 5a-8 |
| (a-1)(a-2) |