题目内容
计算:
(1)|1-
|+|
-
|+|2-
|;
(2)(-2)3×
+
×(-
)2-
.
(1)|1-
| 2 |
| 2 |
| 3 |
| 3 |
(2)(-2)3×
| (-4)2 |
| 3 | (-4)3 |
| 1 |
| 2 |
| 3 | 27 |
(1)原式=
-1+
-
+2-
=1;
(2)原式=-8×4-4×
-3=-32-1-3=-36.
| 2 |
| 3 |
| 2 |
| 3 |
(2)原式=-8×4-4×
| 1 |
| 4 |
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