Diketahui fungsi g (x)= x+1 dan f (x)=x2+x -1. Komposisi (fog)(x)=

g(x) = x + 1f(x) = x² + x - 1fog(x) = f(x+1)          = (x+1)² + (x+1) - 1          = x² + 2x + 1 + x +1 - 1          = x² + 3x + 1
semoga membantu :)

(fog) (x) = (x+1) 2 + (x+1) -1
= 2x + 2 -x -1
= x + 1