diberikan f ( X ) = x³ - 1 dan g ( X ) = X + 1. nilai ( f o g ) ( - 5 ) =

f(x) = x³ - 1
g(x) = x + 1

(fog)(x)
= f(g(x))
= (x + 1)³ - 1
= (x³ + 3x² + 3x + 1) - 1
= x³ + 3x² + 3x

(fog)(-5)
= (-5)³ + 3(-5)² + 3(-5)
= -125 + 75 - 15
= -65