题目内容
计算:
+
-
=
.
6
|
| 3 | -3
| ||
| 3 | 0.125 |
| 1 |
| 2 |
| 1 |
| 2 |
分析:直接利用有理指数幂的运算,求出表达式的值即可.
解答:解:
+
-
=
+
-
=
-
-
=
.
故答案为:
.
6
|
| 3 | -3
| ||
| 3 | 0.125 |
=
|
| 3 | -
| ||
| 3 |
| ||
=
| 5 |
| 2 |
| 3 |
| 2 |
| 1 |
| 2 |
=
| 1 |
| 2 |
故答案为:
| 1 |
| 2 |
点评:本题考查有理指数幂的化简求值,是基础题.
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