Question

I need help with my algebra please, also -27x+19 is wrong so is 27x+19

Answer 1

Given:

f(x) = 9x + 8

g(x) =3x - 3

(f.g)(x) = f(x) . g(x)

= (9x + 8 )(3x - 3)

Open the parenthesis.

= 9x(3x - 3) + 8(3x - 3)

= 27x² - 27x + 24x - 24

= 27x² - 3x - 24

Hence,

(f.g)(x) = = 27x² - 3x - 24