(1)(x^2/x)-y-x-y

来源：学生作业帮编辑：作业帮分类：数学作业时间：2024/05/10 08:29:18

(1)(x^2/x)-y-x-y
(2)(a/a-b)-(a/a+b)-(2b^2/a^2-b^2)

（1)x^2/x)-y-x-y
=x-y-x-y
=-2y
(2)(a/a-b)-(a/a+b)-(2b^2/a^2-b^2)
=a(a+b-a+b)/(a^2-b^2)-(2b^2/a^2-b^2)
=2b/（a+b）

1、x(x-y)(x+y)-x(x+y)^2 (1)(x^2/x)-y-x-y [(-x-y)(-x+y)-(x+y)^2-x(y-y^2)}÷1/2y (1)(x+y)^2-(x-y)^2 1、(x-2y)(x+y) y=(x^2+x)/(x+1) 先化简再求值(x-y)(x+y)-(x-2y) 的完全平方+x(3x-5y)-(x-y)(x-2y),其中x=1/2 y 1) (2x+5y)(2x-5y)(-4x^2-25y^2) 2) [（x+y)(x-y)-(x-y)^2+2y(x-y 因式分解 (1)6(x-y)^3-3y(y-x)^2 (2)x(x-y)(a-b)-y(y-x)( {(x,y) |x|+|y| x>y?x:y 【(x-y)^2+(x+y)(x-y)】除以 2x