`[(x+y)/(y^(2)+xy+x^(2))-(y-x)/(y^(2)-xy+x^(2))]div[(y^(2)+x^(2))/(y^(3)+x^(3))-(y^(2)-x^(2))/(y^(3)+x^(3))]` को सरल कीजिए।

Answer

`(x(x+y))/(x^(2)+xy+y^(2))`