题目内容
计算:(1)2
(
-3
+
); (2)(
)-1-20100+|-
|-tan60°.
| 3 |
| 12 |
| 75 |
| 1 |
| 3 |
| 108 |
| 1 |
| 3 |
| 4 | 3 |
(1)2
(
-3
+
),
=2
(2
-15
+2
),
=2
×(-11
),
=-66;
(2)(
)-1-20100+|-
|-tan60°,
=3-1+4
-
,
=2+3
.
| 3 |
| 12 |
| 75 |
| 1 |
| 3 |
| 108 |
=2
| 3 |
| 3 |
| 3 |
| 3 |
=2
| 3 |
| 3 |
=-66;
(2)(
| 1 |
| 3 |
| 4 | 3 |
=3-1+4
| 3 |
| 3 |
=2+3
| 3 |
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