Tentukan fungsi f(x), jika diketahui (g•f) (x) = 2x² + 4x + 5 dan g(x) = 2x + 3....

g(x) = 2x + 3
(gof) (x) = 2x² + 4x + 5
g(f(x)) = 2 . f(x) + 3

2 . f(x) + 3 = 2x² + 4x + 5
2 . f(x) = 2x² + 4x + 5 - 3
2 . f(x) = 2x² + 4x + 2
f(x) = (2x² + 4x + 2)/2
f(x) = x² + 2x + 1

Moga membantu