题目内容
化简分式:(x-1+
)÷(x+
)
| 1 |
| x+1 |
| x |
| x-1 |
原式=
÷
=
•
=
.
| (x+1)(x-1)+1 |
| x+1 |
| x(x-1)+x |
| x-1 |
| x2 |
| x+1 |
| x-1 |
| x2 |
| x-1 |
| x+1 |
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化简分式
•
的结果是( )
| 5ab |
| 3c |
| 12c2 |
| 5ab2 |
A、
| ||
B、
| ||
C、
| ||
D、
|