How do I input symbols, greek letters, etc.?
It is LaTeX coding.
It really is so easy. And it makes most of us more willing to find out how to help.
This subforum will help you with the code. Once you begin, you quickly learn the code.
[TEX]\alpha,~\beta,~\gamma,~\delta,~\Delta,~\sigma,~ \Sigma[/TEX] gives
[TEX](5+2\sqrt{6})^{x^2-3}+(5-2\sqrt{6})^{x^2-3} [/TEX] gives
If you click on the “go advanced tab” you should see on the tool-bar. That gives the [TEX]..[/TEX] wrap. Your LaTeX code goes between them.