题目内容
(1)化简
÷
;
(2)计算:
-(π-1)0-2×(
)+(
)-1
| 1 |
| x |
| 1 |
| x2+x |
(2)计算:
| 2 |
| 1 | ||
|
| 1 |
| 4 |
(1)
÷
=
=x+1;
(2)原式=
-1-2×
+4=3.
| 1 |
| x |
| 1 |
| x2+x |
| x2+x |
| x |
(2)原式=
| 2 |
| ||
| 2 |
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