typing math symbols and exponents in RISE quiz option?? How do you do this?

Here is my post detailing how to display accessible, full formulas in Rise.  It requires a small understanding of Latex, and a minor JavaScript insert after publish:

https://community.articulate.com/discussions/rise/how-to-add-accessible-mathematics-to-your-rise-course-including-super-and-sub-scripts-and-formulas