Question

This is my question​

Answer 1

`f(x) = (x - 4)(x - 3) \\ g(x) = (7)/((x - 4)(x + 4)) \\ f.g = (x - 4)(x - 3) * (7)/((x - 4)(x + 4)) \\ (x-4)s \: are \: simplified \\ f.g = ((x - 3) * 7)/(x + 4) = (7x - 21)/(x + 4) \\ (f.g) (x) = (7x - 21)/(x + 4)`