题目内容
化简:
=______;
•
=______.
| 2a2b2 |
| 4a3b |
| x2-1 |
| y |
| y2 |
| x+1 |
| 2a2b2 |
| 4a3b |
| b |
| 2a |
| x2-1 |
| y |
| y2 |
| x+1 |
=
| (x+1)(x-1) |
| y |
| y2 |
| x+1 |
=y(x-1)
=xy-y,
故答案为:
| b |
| 2a |
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题目内容
| 2a2b2 |
| 4a3b |
| x2-1 |
| y |
| y2 |
| x+1 |
| 2a2b2 |
| 4a3b |
| b |
| 2a |
| x2-1 |
| y |
| y2 |
| x+1 |
| (x+1)(x-1) |
| y |
| y2 |
| x+1 |
| b |
| 2a |