Dik: f(x)=5x+3 dan g(x)=x²-3 .tentukan (fog) (x) dan (gof) (x)

(fog)(x) = f(g(x))
= 5(x^2-3)+3
= 5x^2-15+3
=5x^2-12
(gof)(x)= g(f(x))
=( 5x+3)^2 -3
=5x^2+9-3
= 5x^2-6