题目内容
化简(x-
)÷(1-
)的结果是( )
| 2x-1 |
| x |
| 1 |
| x |
A.
| B.x-1 | C.
| D.
|
(x-
)÷(1-
),
=
÷
,
=
•
,
=x-1.
故选B.
| 2x-1 |
| x |
| 1 |
| x |
=
| x2-2x+1 |
| x |
| x-1 |
| x |
=
| (x-1)2 |
| x |
| x |
| x-1 |
=x-1.
故选B.
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