题目内容
计算或化简:
(1)计算:2-1-
tan60°+(π-2011)0+|-
|.
(2)化简:(
-
) ÷
.
(1)计算:2-1-
| 3 |
| 1 |
| 2 |
(2)化简:(
| x+1 |
| x |
| x |
| x-1 |
| 1 |
| (x-1)2 |
(1)原式=
-
×
+1+
=-1;
(2)原式=
×(x-1)2
=
×(x-1)2
=-
.
| 1 |
| 2 |
| 3 |
| 3 |
| 1 |
| 2 |
=-1;
(2)原式=
| x2-1-x2 |
| x(x-1) |
=
| -1 |
| x |
=-
| x-1 |
| x |
练习册系列答案
相关题目