Evaluate this expression if x=-3, y=6, w=2

Question

3x^3w^2+xy^2 why the answer is -432 ?

Answer 1

3*(-3)^3 *(2)^2 + (-3)(6)^2 =

-27*3 * 4 + -108 =

-324 + -108 =

-432 :D