Question

F(x)=x-3
G(x)=x^3+4
H(x)=x^2+2x-5

(Foh)(x)

Answer 1

$F(x)=x-3\\H(x)=x^2+2x-5\\\\(F\circ H)(x)=(x^2+2x-5)-3=x^2+2x-5-3=x^2+2x-8$