g(x)=x+3 dan (fog)(x)=x²-4 maka f(x-2)=

f(g(x)) = fog(x)
f(x + 3) = x² - 4
f(x + 3) = (x + 3)² - 3(x + 3) - 4
f(x) = x² - 3x - 4
f(x - 2) = (x - 2)² - 3(x - 2) - 4
= x² - 4x + 4 - 3x + 6 - 4
= x² - 7x + 6