题目内容
计算:
(1)(
-1)0+(-
)-1-(-1)2011;
(2)(
)2•(
)-2.
(1)(
| 2 |
| 1 |
| 2 |
(2)(
| y3 |
| x |
| 2y2 |
| -x |
(1)原式=1-2+1
=0;
(2)原式=
•
=
y2.
=0;
(2)原式=
| y6 |
| x2 |
| x2 |
| 4y4 |
=
| 1 |
| 4 |
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题目内容
| 2 |
| 1 |
| 2 |
| y3 |
| x |
| 2y2 |
| -x |
| y6 |
| x2 |
| x2 |
| 4y4 |
| 1 |
| 4 |