题目内容
计算:
•
=______.
| 4xy |
| (x-y)2 |
| x-y |
| 2y |
原式=
•
=
.
故答案为:
.
| 2x•2y |
| (x-y)(x-y) |
| x-y |
| 2y |
=
| 2x |
| x-y |
故答案为:
| 2x |
| x-y |
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题目内容
| 4xy |
| (x-y)2 |
| x-y |
| 2y |
| 2x•2y |
| (x-y)(x-y) |
| x-y |
| 2y |
| 2x |
| x-y |
| 2x |
| x-y |