题目内容
计算:
(1)
+(3-π)0-2sin60°
(2)
×
+(
-1)2.
(1)
| 12 |
(2)
| 2 |
| 32 |
| 2 |
(1)原式=2
+1-2×
=2
+1-
=
+1;
(2)原式=
+2-2
+1
=8+2-2
+1
=11-2
.
| 3 |
| ||
| 2 |
=2
| 3 |
| 3 |
=
| 3 |
(2)原式=
| 2×32 |
| 2 |
=8+2-2
| 2 |
=11-2
| 2 |
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