题目内容
计算
(1)
-
+|
-2|-(2011-π)0;
(2)(x2y-
xy2-2xy)÷
xy.
(1)
| 4 |
| 3 | 27 |
| 3 |
(2)(x2y-
| 1 |
| 2 |
| 1 |
| 2 |
(1)原式=2-3+2-
-1
=-
;
(2)原式=x2y÷
xy-
xy2÷
xy-2xy÷
xy,
=2x-y-4.
| 3 |
=-
| 3 |
(2)原式=x2y÷
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
| 1 |
| 2 |
=2x-y-4.
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