题目内容
计算题
(1)
-
-(
)2
(2)
+|
-2|+(sin45°)-1.
(1)
4 |
(-4)2 |
3 |
(2)
1 | ||
|
2 |
(1)原式=2-4-3=-5;
(2)原式=
+1+2-
+(
)-1
=
+1+2-
+
=3+
.
(2)原式=
2 |
2 |
| ||
2 |
=
2 |
2 |
2 |
=3+
2 |
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题目内容
4 |
(-4)2 |
3 |
1 | ||
|
2 |
2 |
2 |
| ||
2 |
2 |
2 |
2 |
2 |