Question

(x - y)(x^2 + xy + y^2)

Answer 1

(X^3+x^2-Y^2-Y^3)
Rough Guess,

Answer 2

go through the motions. x multiplied by each in the second group, then -y multiplied by the same. you should get x^3+x^2y+xy^2-x^2y-xy^2-y^3, combining like terms your final answer should be x^3-y^3

Answer 3

ok i see now. thanks