题目内容
计算:
(1)(-1)2013-|-7|+
×(
-π)0+(
)-1;
(2)2-(-
)2+
+|
-2|.
(1)(-1)2013-|-7|+
| 9 |
| 7 |
| 1 |
| 5 |
(2)2-(-
| 1 |
| 2 |
| 3 | -8 |
| 3 |
(1)原式=-1-7+3×1+5
=-1-7+3+5
=-8+8
=0;
(2)原式=2-
-2+2-
=
-
.
=-1-7+3+5
=-8+8
=0;
(2)原式=2-
| 1 |
| 4 |
| 3 |
=
| 7 |
| 4 |
| 3 |
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