Question

If f(x)=4x-1 and g(x)=x^2+7 ,find G(f(x))

Answer 1

16x² - 8x + 8

Explanation:

f(x)=4x-1

g(x)=x²+7

g(f(x)) = g(4x-1) = (4x - 1)² + 7 = 16x² - 2*4x*1 +1² + 7= 16x² - 8x + 8