Question

Two functions are defined as follows.
•f(x) = x2 – 2x – 1
•g(x) = 2x - 1
Determine a simplified expression to represent (f.g)(x). Use the on-screen keyboard to type the correct answer in the box.
(f•g)(x)=​

PLEASE HELP, I HAVE LIMITED TIME!

Answer 1

(fog)(x) = f(g(x)) = f(2x -1) = (2x - 1)^2 - 2(2x - 1) - 1 = 4x^2 - 4x + 1 - 4x + 2 - 1 = 4x^2 - 8x + 2