题目内容
用幂的运算性质计算:
÷
÷2
.
| 8 |
| 3 | 16 |
| 1 |
| 6 |
分析:先根据根式的性质得出8
÷16
÷2
,再根据幂的乘方得出2
÷2
÷2
,根据同底数幂的除法法则得出2
-
-
,求出即可.
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 6 |
| 3 |
| 2 |
| 4 |
| 3 |
| 1 |
| 6 |
| 3 |
| 2 |
| 4 |
| 3 |
| 1 |
| 6 |
解答:解:原式=8
÷16
÷2
=2
÷2
÷2
=2
-
-
=20
=1.
| 1 |
| 2 |
| 1 |
| 3 |
| 1 |
| 6 |
=2
| 3 |
| 2 |
| 4 |
| 3 |
| 1 |
| 6 |
=2
| 3 |
| 2 |
| 4 |
| 3 |
| 1 |
| 6 |
=20
=1.
点评:本题考查了根式的性质,幂的乘方,同底数幂的除法法则,分数指数幂等知识点的应用.
练习册系列答案
相关题目