(x+y分之2x×y平方)的立方÷(x平方-y平方分之x×y立方)的平方÷[2(x-y)分之1]
=(2xy^2)^3/(x+y)^3*(x^2-y^2)^2/(xy^3)^2*2^2(x-y)^2
=32x(x-y)^4/(x+y)