Question

Given that f(x) = 4x + 2 and g(x)= x2 - 4x - 6, find (gof)(5).
(gof)(5)

Answer 1

gof (5) = 390

Explanation:

g(f(5) = g(4(5) + 2) = g(22) = (22)^2 - 4(22) - 6

484 - 88 - 6

484 - 94

390