题目内容
先化简,再求出近似值(精确到0.01):
(1)
-
-
;(2)(
-3)(2
+1)
(1)
| 12 |
|
1
|
| 2 |
| 2 |
(1)原式=2
-
-
=
≈1.73;
(2)原式=4+
-6
-3
=1-5
≈-6.07.
| 3 |
| ||
| 3 |
2
| ||
| 3 |
=
| 3 |
≈1.73;
(2)原式=4+
| 2 |
| 2 |
=1-5
| 2 |
≈-6.07.
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