(2x/3y)^2÷6x/2y+x^2/2y^2÷2y^2/x

化简3x-2/(x+y)[(x+y)/3x-x-y]÷(x-y)/x [2(x-y)^5-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2[2(x-y)^3-8(x-y)^2(x+y)+6y(x-y)^2]÷2(x-y)^2 【2(x-y)(x-y)(x-y)-8(x-y)(x-y)(x+y)+6y(x-y)(x-y)]/2(x-y)(x-y) 计算：(x-y)^7÷(y-x)^6+(-x-y)^3÷(x+y)^2 计算(x-y)^7÷(y-x)^6+9-x-y)^3÷(x+y)^2 4x-3y/x-2y÷6y-8x/y-2x [12(x+y)^3+3(x+y)(x-y)^2]÷6(x+y) x(x-y)2-(y-x)3 因式分解3x^2(x-y)+6x(y-x) 化简：x-y/x+3y÷x^-y^2/x^2+6xy+9y^2-(xy/x+y) x²/xy-x/y 3x/4x+y - x-2y/4x+y (1-y/y+x)÷x/y²-x² [2/3x-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 (x+y)-(x-y)^3÷(x-y)(x+y)×2y化简e , x-y/x-x+y/y-(x+y)(x-y)/y² y/x=2 3y/x*x-y*y+x/x*x-2xy+y*y+6y*y/x*x*x-x*x*y-xy*y+y*y*y等于多少? 6x^3y^2÷(-y/x)*x/y^2÷x^2