jika f (×)= 4×-2×+7 dan g(×)= ×-4 maka nilai (f o g)(2) =

(fog)(2)
= 4(2-4)² - 2(2-4) + 7
= 4(-2)² - 2(-2) + 7
= 4(4) + 4 +7
= 16 + 11
= 27

kalo ini caranya, dicari dulu baru dimasukin