题目内容
化简下式:(2
)0.5+0.1-2+(2
)-
-3π0+
.
| 7 |
| 9 |
| 10 |
| 27 |
| 2 |
| 3 |
| 37 |
| 48 |
分析:化带分数为假分数,代0指数的幂为1,然后利用有理指数幂的化简求值.
解答:解:(2
)0.5+0.1-2+(2
)-
-3π0+
=(
)
+102+(
)-
-3+
=
+100+
-3+
=100.
| 7 |
| 9 |
| 10 |
| 27 |
| 2 |
| 3 |
| 37 |
| 48 |
=(
| 25 |
| 9 |
| 1 |
| 2 |
| 64 |
| 27 |
| 2 |
| 3 |
| 37 |
| 48 |
=
| 5 |
| 3 |
| 9 |
| 16 |
| 37 |
| 48 |
=100.
点评:本题考查有理指数幂的化简求值,是基础题.
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