Let f(x)=5x^3-2x and g(x)=3x^3.Preform the operation given and state the domain.

Question

A. F(x)+ g(x)
B. F(x) - g(x)
C. F(x) • g(x)
D. F(x) / g(x)
E. f(g(x))
F. g (f(x)

Answer 1

That's "perform"
I'll assume you know how to add and multiply polynomials for A-D.

f(g) = 5g^3-2g = 5(3x^3)^3-2(3x^3) = 135x^9-6x^3

g(f) = 3f^3 = 3(5x^3-2x)^3 = 375x^9-450x^7+180x^5-24x^3