`(x+y)(x^(2)- xy +y^(2))` is equal to

x = (sqrt3 + 1)/(sqrt3 - 1) and y = (sqrt3 - 1)/(sqrt3 + 1) . Then (x^2 + xy + y^2)/(x^2 -xy + y^2) is equal to :

What is ((x^(2)+y^(2))(x-y)-(x-y)^(3))/(x^(2)y-xy^(2)) equal to ?

If x:y = 3 : 2, then the ratio 2x^(2) + 3y^(2) : 3x^(2) - 2y^(2) is equal to :

On simplification, (x^3-y^3)/(x[(x+y)^2-3xy]) div (y[(x-y)^2+3xy])/(x^3+y^3)xx ((x+y)^2-(x-y)^2)/(x^2-y^2) is equal to : सरलीकरण के बाद, (x^3-y^3)/(x[(x+y)^2-3xy]) div (y[(x-y)^2+3xy])/(x^3+y^3)xx ((x+y)^2-(x-y)^2)/(x^2-y^2) किसके बराबर होगा?

If x=2,y=1 then x^(4)+2x^(3)y-2xy^(3)-y^(4) is equal to

If y^((1)/(n))+y^(-(1)/(n))=2x then (x^(2)-1)y_(2)+xy_(1) is equal to