Oh, there is an equations editor that will serve beautifully if you want to embed equations in plain text. Us math types use it all the time in casual emails: LaTeX.
\begin{align}
e&=mc^2\ \
F&=ma\ \
s&=v t.\end{align}
If you’ve not run across it, it’s available for free and it’s becoming the lingua franca of technical communication.
Unfortunately, the system used here has some quirks; it does not display the first backslash, and it edits out multiple instances of a single character. I couldn’t figure out how to get back to back backslashes, which one wants at the end of each equation line, to display without a space between them.