how to use optimization toolbox?

how can i solve the following using optimization toolbox?

[John D'Errico]

You cannot solve that. It is absolutely impossible. Of course, you've not bothered to tell us what you are trying to solve, so I've assumed that you wish to solve Fermat's problem, or perhaps some other intractable tidbit.

If you actually have a specific problem, you might make it easier on us, rather than forcing us to rely on a crystal ball.