mohon bntuannyaaa makasihhh yahhh

Dik : f(x) = x² - 4 dan g(x) = x + 3
Dit : (fOg)(x) dan (gOf)(1)
Jawab : (fOg)(x) = f (g(x))
= f (x + 3)
= (x + 3)² - 4
= x² + 6x + 9 - 4
= x² + 6x + 5

(gOf)(x) = g (f(x))
= g (x² - 4)
= (x² - 4) + 3
= x² - 1
(gOf)(1) = 1² - 1
= 1 - 1
= 0