题目内容
计算
(1)(2
)
-(-9.6)0-(3
)-
+(1.5)-2
(2)2
×
×
.
(1)(2
| 1 |
| 4 |
| 1 |
| 2 |
| 3 |
| 8 |
| 2 |
| 3 |
(2)2
| 3 |
| 6 | 12 |
| 3 |
| ||
分析:(1)直接利用有理指数幂的运算法则求解即可.
(2)直接利用根式与分数指数幂的运算法则求解即可.
(2)直接利用根式与分数指数幂的运算法则求解即可.
解答:解:(1)(2
)
-(-9.6)0-(3
)-
+(1.5)-2
=
-1-
+
=-
.
(2)2
×
×
=2×3
×12
×(
)
=2×3
+
+
×2
-
=6×2-
=6
| 1 |
| 4 |
| 1 |
| 2 |
| 3 |
| 8 |
| 2 |
| 3 |
=
| 3 |
| 2 |
| 4 |
| 9 |
| 9 |
| 4 |
=-
| 5 |
| 12 |
(2)2
| 3 |
| 6 | 12 |
| 3 |
| ||
=2×3
| 1 |
| 2 |
| 1 |
| 6 |
| 3 |
| 2 |
| 1 |
| 3 |
=2×3
| 1 |
| 2 |
| 1 |
| 6 |
| 1 |
| 3 |
| 1 |
| 6 |
| 1 |
| 3 |
=6×2-
| 1 |
| 6 |
=6
| 6 | 2 |
点评:本题考查根式与分数指数幂的互化及其化简运算,是基础题.
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