Diketahui f (x) = 2x-3 dan g (x) = x per x+2 , x tidak sama -2 maka (fog)(x) =

fog(x) = f(g(x)) = 2(x / x+2) - 3
= (2x / x+2) - 3
= (2x / x+2) - 3(x+2)/(x+2)
= (2x / x+2) - (3x+6 / x+2)
= (2x - 3x - 6) / (x + 2)
= (-x - 6) / (x + 2)