diketahui fungsi f(x) = x-3 dan g(x) = x2 - 5x + 1. fungsi komposisi : a. (fog)(3) b. (gof)(3)

a. fog (x) = x² - 5x + 1 -3
= x² -5x -2
fog (3) = 9-15-2
= -8

b. gof (x) = (x-3)² -5 (x-3) +1
= x² - 6x + 9 - 5x + 15 + 1
= x² - 11x +25
gof (3) = 9 - 33 +25
= 1

maaf jika salah ya