Diketahui fungsi f(x)=2x + 3 dan fungsi g(x)=3x2 - 2x + 5 nilai (g o f)(-2) adalah..

Kelas 10 Matematika
Bab Fungsi Komposisi

(gof) (x) = g(2x + 3)
(gof) (x) = 3(2x + 3)² - 2(2x + 3) + 5
(gof) (-2) = 3 (2 . (-2) + 3)² - 2 . (2 . (-2) + 3) + 5
(gof) (-2) = 3 . (-4 + 3)² - 2 (-4 + 3) + 5
(gof) (-2) = 3 . 1 - 2 . (-1) + 5
(gof) (-2) = 10