题目内容
(1)计算(-
+
-
)×|-12|;
(2)计算
-(2+
)2.
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 4 |
(2)计算
| 32 |
| 2 |
(1)原式=-
×12+
×12-
×12
=-6+8-3
=-1;
(2)原式=4
-(4+4
+2)
=4
-6-4
=-6.
| 1 |
| 2 |
| 2 |
| 3 |
| 1 |
| 4 |
=-6+8-3
=-1;
(2)原式=4
| 2 |
| 2 |
=4
| 2 |
| 2 |
=-6.
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