Question

2- Determine ''fog'' sendo :
f(x)=x²+6 e g(x)=x+2

Answer 1

$fog(x) = f(g(x))\quad e\quad g(x)=x+2,\quad portanto: fog(x) = f(x+2)\\\\f(x)=x^2+6\\\\fog(x) = f(x+2) = (x+2)^2+6\\fog(x) = x^2+4x+4+6 = x^2+4x+10$