Jika diketahui f (x) = x + 3 dan g (x) = 2×2 – x + 5, maka (g o f)(x) = ….​

(gof)(x)
= g(f(x))
= 2(x + 3)^2 – (x + 3) + 5
= 2(x^2 + 6x + 9) – x – 3 + 5
= 2x^2 + 12x + 18 – x + 2
= 2x^2 + 11x + 20

semoga membantu