题目内容
| 2xy-y2 |
| x2-y2 |
| x-y |
| x+y |
| m |
| x2-y2 |
∵
+
=
,
∴
+
=
.
故答案为:x2.
| 2xy-y2 |
| x2-y2 |
| x-y |
| x+y |
| m |
| x2-y2 |
∴
| 2xy-y2 |
| x2-y2 |
| (x-y)2 |
| x2-y2 |
| x2 |
| x2-y2 |
故答案为:x2.
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题目内容
| 2xy-y2 |
| x2-y2 |
| x-y |
| x+y |
| m |
| x2-y2 |
| 2xy-y2 |
| x2-y2 |
| x-y |
| x+y |
| m |
| x2-y2 |
| 2xy-y2 |
| x2-y2 |
| (x-y)2 |
| x2-y2 |
| x2 |
| x2-y2 |