f(x):4-1 dan g(x):x2-1 A.(f°g) (x) B.(g°f) (x) C.(f°f) (x) D.(g°g) (x)

A. (F°g) (x) = g (x)
= X²-1
= (4x²-1)-1
=4x²+2
B. (g°f) (x) = f (x)
= 4-1
=(4x²-1)-1
=4x²+2
mf cuma ini yg sy bisa jwb