题目内容
计算:
(1)|-
|-
+(π-4)0-sin30°
(2)
-3
-(
+5
)×
.
(1)|-
| 1 |
| 2 |
| 9 |
(2)
5
| ||
| 2 |
|
| 12 |
| 8 |
| 3 |
(1)原式=
-3+1-
=-2;
(2)原式=
×2
-3×
-(2
+10
)×
=5
-
-6-10
=-6
-6.
| 1 |
| 2 |
| 1 |
| 2 |
=-2;
(2)原式=
| 5 |
| 2 |
| 6 |
| ||
| 3 |
| 3 |
| 2 |
| 3 |
=5
| 6 |
| 6 |
| 6 |
=-6
| 6 |
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