Question

Confirm that f and g are inverses by showing that f(g(x)) = x and g(f(x)) = x.
f(x) = x3 + 4 and g(x) = 3√(x-4)

Answer 1

It is simple. Give it a try. If it doesn't work out, we'll do it.

Answer 2

What you do is plug each equation into each others x.

So to do: f(g(x)) You plug the equation of g(x) into the x place of f(x) and it should simplify down to x

Answer 3

y=x3+4
y-4=x3
3√(y-4)=x?

Answer 4

See how I put the function of g(x) into the x place of f(x)?