Jika g(x) = 2x-5 dan (g o g ) (x) = 4x^2-6x+3 nilai f(-3)=

mungkin → (gof)(x)

maka
(gof)(x) = g{f(x)}

4x² - 6x + 3 = 2f(x) - 5

4x² - 6x + 3 + 5 = 2f(x)

2(2x² - 3x + 4) = 2f(x)

2x² - 3x + 4 = f(x)

f(-3) = 2(-3)² - 3(-3) + 4
f(-3) = 2(9) + 9 + 4
f(-3) = 18 + 9 + 4
f(-3) = 31

semoga berguna +_+