Question

Jika g(x) = x^2 + x - 4 dan (f o g )(x) = 4x^2 + 4x - 9,maka f(x-2) adalah ...

Answer 1

G(x) = x^2+x-4
(f o g ) (x) = 4x^2 + 4x-9
f (x^2+x-4) = 4 ( x^2+x-4) + 7
f(x) = 4x + 7
f(x-2) = 4(x-2) + 7
f(x-2) =4x-8+7
f(x-2)= 4x-1