Question

Given f(x) =x²-5+2 and g (x)=x-4 find (f•g)(x)​

Answer 1

Answer: x^2 -8x+9

Explanation:

substitute x-4 into f(x)

(x-4)^2 -5+2

expand brackets

x^-8x+16 -5+2

x^2-8x+13

Then substitute this answer into g(x)

x^2 -8x+13-4

=x^2-8x+9