dik: (gof)(x)=x^2-2x-2 g(x)=x+1 ditanya f(x)

Dik: (g.o.f) (x) = x² - 2x - 2
g(x) = x + 1
Dit: f(x)?
Jawab:
(g.o.f) (x) = x² - 2x - 2
g (f(x)) = x² - 2x - 2
(f(x)) + 1 = x² - 2x - 2
(f(x)) = x² - 2x - 2 - 1
(f(x)) = x² - 2x - 3