Question

Consider f(x)=x²-4
g(x)=2f(x)
h(x)=f(2x)
Find g(x) and h(x) in terms of x

Answer 1

Explanation:

g(x) = 2(f(x))

= 2(x² - 4)

= 2x² - 8

h(x) = f(2x)

= 2(2x)² - 4

= 8x² - 4