Diketahui f(x) = 4x-1 dan g(x) = x pangkat 2+2. Tentukan (f○f) (x)

f(x) = 4x-1
g(x) = x2+2
fog(x) = f(g(x))
= 4 (x2+2) -1
= 4x2 + 8 - 1
= 4x2 + 7

fof(x) = 4 (4x-1)
= 16x - 1