Diketahui f(x) = x²+2-5 g(x) = 3x+2 tentukan (fog) (x)

f(x) = x²+2-5
g(x)=3x+2
f(x)=x²-3
fog (x)=(3x-3)²-3
           =9x²-18x+9-3
           =9x²-18x+6  ( dibagi 3 )
           =3x²-6x+2