(x-y)×(x-y)^3×(y-x)^2
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(x-y)×(x-y)^3×(y-x)^2(x-y)×(x-y)^3×(y-x)^2(x-y)×(x-y)^3×(y-x)^2=（x-y）^6
(x-y)×(x-y)^3×(y-x)^2
(x-y)×(x-y)^3×(y-x)^2
(x-y)×(x-y)^3×(y-x)^2
=（x-y）^6
(3x-y)(3y+x)-(x-y)(x+y)
{(x,y) |x|+|y|
x>y?x:y
x(x-y)2-(y-x)3
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[2/3x-2/x+y(x+y/3x-x-y)]/x-y/x
化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x
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计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x
计算 3x+4y/x-y+3y/y-x-4x/x-y
3x+4y/x-y +3y/y-x -4x/x-y
[(3x+y)(x-y)-(2x+3y)(x-y)]*(x-y)
x(4y-x)(x-3y)+y(3y-x)(x-4y)因式分解
计算：x+2y/x-y+2x/y-x-3y/x-y
化简:(x-3y)(x+y)-(x-2y)(x+2y)-(x-y)平方
（x+y-5)*（x+y-5)+（x-y+3)=0 x*x-y*y
已知:3x-5y=0,求x/y,x-y/y,x-y/x
x^/y-x-y^/y-x化简.