diketahui g(x) = x² - 2x + 1 dan (f ° g) (x) = 5x² - 10x + 2. nilai f(-3) =...

jawab

(fog)(x) = 5x² -10x + 2
f{g(x)} = 5x² -10x + 2
f(x²-2x +1) = 5x² -10x + 2
f(x²-2x +1)= 5(x² - 2x +1) - 3
f(x) = 5x- 3
f(-3) = 5(-3) - 3
f(-3)  = -15 - 3
f(-3) = -18