diberikan g(x) = 3x + 2 dan (g°f)(x) = 9x^2 + 6x + 8.nilai f(-2)= .....

(gof)(x) = 9x²+6x+8
g(f(x)) = 9x²+6x+8
3f(x) + 2 = 9x²+6x+8
3f(x) = 9x²+6x+6
f(x) = (9x²+6x+6)/3

maka f(-2) = (9(-2)² + 6(-2) + 6)/3
f(-2) = (36-12+6)/3
f(-2) = 30/3 = 10

semoga membantu
ㅡ :)

semoga jawabanya membantu:)