题目内容
计算:
=
=
=
=
| 4 |
2
2
,| 3 |
| ||
-
| 2 |
| 3 |
-
.| 2 |
| 3 |
(
|
2-
| 3 |
2-
,| 3 |
| 0.4×0.9 |
0.6
0.6
.分析:根据算术平方根、立方根的定义即可求解.
解答:解:
=2,
=-
,
=2-
,
=0.6.
故答案为2,-
,2-
,0.6.
| 4 |
| 3 |
| ||
| 2 |
| 3 |
(
|
| 3 |
| 0.4×0.9 |
故答案为2,-
| 2 |
| 3 |
| 3 |
点评:本题主要考查了算术平方根、立方根的定义,难度适中.
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