f(x) = 2x - 4 g(x) = x kuadrat + 2x - 4 tentukan (f0g)(3) ? mohon bantuanya

(fog)(x) = f(g(x))
= x kuadrat + 2x - 4
= 2x - 4
= 2 ( x kuadrat + 2x - 4) - 4
= 2xkuadrat + 4x - 8 - 4
= 2xkuadrat + 4x - 12
(fog)(3) = 2(3)² + 4(3) - 12
= 18 + 12 - 12
= 18