问题
填空题
化简
|
答案
-x+1 x-1
÷x2-2x x2-1 x2-x-2 x2+2x+1
=
-x+1 x-1
•x(x-2) (x+1)(x-1) (x+1)2 (x-2)(x+1)
=
-x+1 x-1
=x x-1
．1 x-1
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化简
|
-x+1 x-1
÷x2-2x x2-1 x2-x-2 x2+2x+1
=
-x+1 x-1
•x(x-2) (x+1)(x-1) (x+1)2 (x-2)(x+1)
=
-x+1 x-1
=x x-1
．1 x-1