Question

Let f(x) = x2 + 6x and g(x) = 4x2 − 1. Find the function and its domain.
(f · g)(x) =

Answer 1

Multiply f(x) by g(x)

Answer 2

Put g(x) into f(x)

everywhere there is an x in f(x) you put in (4x^2 - 1)

f(x) = (4x^2 - 1)^2 + 6(4x^2 - 1)