题目内容
(1)化简:(
+
)÷
(2)计算:-23+(π-3.14)0-|1-2
|×(-
)-1.
| 4 |
| x2-4 |
| 1 |
| x+2 |
| 1 |
| x-2 |
(2)计算:-23+(π-3.14)0-|1-2
| 1 |
| 2 |
| 1 |
| 2 |
(1)原式=
+
=1;
(2)原式=-8+1-1
×(-2)=-8+1+3=-4.
| 4 |
| x+2 |
| x-2 |
| x+2 |
(2)原式=-8+1-1
| 1 |
| 2 |
练习册系列答案
相关题目