Use the given functions to find g (f(x)).f(x) = x +3 and g(x) = ?x +3g (f(x)) =Use sqrt(x) to enter a square root of

Use the given functions to find g (f(x)).f(x) = x² +3 and g(x) = ?x +3g (f(x)) =Use sqrt(x) to enter a square root of x.