Question

alguem sabe como faz?

g(x) = x + 2 e f(x) = 2.x
g(f(x)) =​

Answer 1

$\Large\boxed{\begin{array}{l}\sf g(x)=x+2\\\sf f(x)=2x\\\sf g([f(x)])=2\cdot f(x)\\\sf g([f(x)])=2\cdot(x+2)\\\sf g([f(x)])=2x+4\end{array}}$