题目内容
计算:
(1)
-
-
;
(2)|-
|+(-
)sin45°+(
)0.
(1)
| 27 |
| 1 |
| 3 |
| 18 |
| 12 |
(2)|-
| 2 |
| 1 |
| 2 |
| 2009 |
(1)原式=3
-
-2
=
-
;
(2)原式=
-2×
+1=1.
| 3 |
| 2 |
| 3 |
| 3 |
| 2 |
(2)原式=
| 2 |
| ||
| 2 |
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题目内容
| 27 |
| 1 |
| 3 |
| 18 |
| 12 |
| 2 |
| 1 |
| 2 |
| 2009 |
| 3 |
| 2 |
| 3 |
| 3 |
| 2 |
| 2 |
| ||
| 2 |