题目内容
计算:(1)|-
|+
-sin30°+(π-3)0;
(2)(
-
)÷
.
| 1 |
| 2 |
| 9 |
(2)(
| x2 |
| x-1 |
| 2x |
| 1-x |
| x |
| x-1 |
解(1):原式=
+3-
+1=4
(2)原式=
•
=x+2
| 1 |
| 2 |
| 1 |
| 2 |
(2)原式=
| x(x+2) |
| x |
| x-1 |
| x |
练习册系列答案
相关题目
题目内容
| 1 |
| 2 |
| 9 |
| x2 |
| x-1 |
| 2x |
| 1-x |
| x |
| x-1 |
| 1 |
| 2 |
| 1 |
| 2 |
| x(x+2) |
| x |
| x-1 |
| x |