题目内容
已知:x=
,求(
-
)÷
的值.
| 1 |
| 3 |
| x2 |
| x-1 |
| 2x |
| x-1 |
| x |
| x-1 |
原式=
÷
=
•
=x-2;
当x=
时,原式=-
.
| x2-2x |
| x-1 |
| x |
| x-1 |
| x(x-2) |
| x-1 |
| x-1 |
| x |
当x=
| 1 |
| 3 |
| 5 |
| 3 |
练习册系列答案
相关题目
题目内容
| 1 |
| 3 |
| x2 |
| x-1 |
| 2x |
| x-1 |
| x |
| x-1 |
| x2-2x |
| x-1 |
| x |
| x-1 |
| x(x-2) |
| x-1 |
| x-1 |
| x |
| 1 |
| 3 |
| 5 |
| 3 |