Suku banyak f (x) =x-3 dan g (x)= x2 +2x+5.hasil dari (gof)(x)

(g o f) (x)
= (x-3)^2 + 2(x-3) + 5
= x^2 - 6x + 9 + 2x - 6 + 5
= x^2 - 4x + 8