题目内容
x2-2x+1 |
x2-1 |
x-3 |
x+1 |
分析:先算括号里面的,再分解因式,约分得出结果即可.
解答:解:原式=
÷(
+
)(3分)
=
×
(4分)
=
(5分)
(x-1)2 |
(x+1)(x-1) |
x+1 |
x+1 |
x-3 |
x+1 |
=
x-1 |
x+1 |
x+1 |
2(x-1) |
=
1 |
2 |
点评:本题考查了分式的混合运算,是基础知识要熟练掌握.
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