题目内容
| x2-2x+1 |
| x2+4x+4 |
| x2+3x+2 |
| x-1 |
分析：先将分子分母因式分解，然后将除法转化为乘法，约分即可．
解答：解：原式=
•
•
=
．
| (x-1)2 |
| (x+2)2 |
| 1 |
| x-1 |
| (x+1)(x+2) |
| x-1 |
=
| x+1 |
| x+2 |
点评：本题考查了分式的乘除法，熟悉因式分解是解题的关键．
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题目内容
| x2-2x+1 |
| x2+4x+4 |
| x2+3x+2 |
| x-1 |
| (x-1)2 |
| (x+2)2 |
| 1 |
| x-1 |
| (x+1)(x+2) |
| x-1 |
| x+1 |
| x+2 |