[12(x+y)^3+3(x+y)(x-y)^2]÷6(x+y)

(3x-y)(3y+x)-(x-y)(x+y) x(x-y)2-(y-x)3 （y-x)+x(x-y)^3-(y-x)^4 因式分解 [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 化简：{2/3x-2/(x+y)[(x+y)/3x-x-y]}/(x+y)/x 计算2/3x-2/x+y(x+y/3x-x-y)/x-y/x [12(x+y)^3+3(x+y)(x-y)^2]÷6(x+y) 因式分解:12xy^2(y-x)+xy^3(x-y)+4x^2y(x-y) 12（x+y）^3（y-x）/【4（x+y）^2(x-y)】 3x^2(x-y)+12(y-x)化简 12y(x-y)^2-8(x-y)^3=? 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