Let f(x) = x + 5 and g(x) = x^3 + 1. Let p(x) = g(x) + f(x) and q(x) = g(x) - f(x). Find p(x)*q(x).
p(x)*q(x) = g(x)^2-f(x)^2 = x^6-2x^3+1-x^2-10x-25 = x^6-2x^3-x^2-10x-24
+178 
