题目内容
计算:(-| 3 |
| 7 |
| 1 |
| 2 |
| 2 |
分析:(-
)0=1,(
)-1=2,按照实数的运算法则依次计算.
| 3 |
| 7 |
| 1 |
| 2 |
解答:解:原式=1-4×
×
+2×
=1-
+2
=1+
.
| ||
| 2 |
| 1 |
| 2 |
| 2 |
=1-
| 2 |
| 2 |
=1+
| 2 |
点评:本题考查的知识点是:任何不等于0的数的0次幂是1;a-p=
.
| 1 |
| ap |
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题目内容
计算:(-| 3 |
| 7 |
| 1 |
| 2 |
| 2 |
| 3 |
| 7 |
| 1 |
| 2 |
| ||
| 2 |
| 1 |
| 2 |
| 2 |
| 2 |
| 2 |
| 2 |
| 1 |
| ap |