计算：[（x²-2x+1）/（x²-1）]÷[（x-1）(x²+x)]-x
问题描述：
计算：[（x²-2x+1）/（x²-1）]÷[（x-1）(x²+x)]-x
要有过程解答.
答
[（x²-2x+1）/（x²-1）]÷[（x-1）(x²+x)]-x =（x-1）^2 / [（x+1)(x-1）] ÷ [x（x-1）(x+1] - x =（x-1）^2 ÷ x - x =（x-1）^2 / x - x ={（x-1）^2-x^2} / x =（1-2x) / x 或写作：1/x -2...