Question

Dadas as funções f(x) = x - 3 e g(x) = x², calcule:
a) fog(x)
b) gof(x)

Answer 1

$a)~fog(x) = x^2 -3 \\\\ b)~gof(x) = (x-3)^2 \\ ~~~gof(x) = x^2-6x+9$