题目内容
计算:
+
=______.
x |
(x-y)3 |
y |
(y-x)3 |
原式=
-
=
=
.
故答案为:
.
x |
(x-y)3 |
y |
(x-y)3 |
x-y |
(x-y)3 |
1 |
(x-y)2 |
故答案为:
1 |
(x-y)2 |
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题目内容
x |
(x-y)3 |
y |
(y-x)3 |
x |
(x-y)3 |
y |
(x-y)3 |
x-y |
(x-y)3 |
1 |
(x-y)2 |
1 |
(x-y)2 |