Diket f(x) =4x+5 dan g (x) = 3x-p tentukan nilai p jika (fog) (x) = (gof)

(f°g)(x) = f (g (x))
= 4 (g (x)) +5
= 4 ( 3x-p) +5
= 12x - 4p + 5
(g°f)(x) = g (f (x))
= 3 (f (x)) - p
= 3 (4x+5) - p
= 12x + 15 - p