Question

Given the definitions of f(x) and g(x) below, find the value of (g o f)(0).

f(x) = x2 – 2x - 5
g(x) = 4x + 4

Answer 1

its 3

so its

(4x+4)^2-2(4x+4)-5

so first you have to do

(4x+4)(4x+4)

the answer is 16x^2+32x+16

and then you do -2(4x+4) and then you add them so then its

16x^2+32x+16-8x-8-5

and then you just add like terms so its

16x^2+24x+3

and then you insert 0 for x

so the answer is 3

Explanation: