题目内容
计算:
(1)
+
-(-1)2013×
(2)
-
×
+|1-
|+(-
)2.
(1)
| 4 |
| 3 | -27 |
| 1 |
| 2 |
(2)
| (-2)2 |
| 3 | 64 |
| 1 |
| 4 |
| 2 |
| 3 |
(1)原式=2-3+1×
=-1+1
=0;
(2)原式=2-4×
+
-1+3
=2-1+
-1+3
=
+3.
| 1 |
| 2 |
=-1+1
=0;
(2)原式=2-4×
| 1 |
| 4 |
| 2 |
=2-1+
| 2 |
=
| 2 |
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