LaTeX editing is supported for both Pins and comments to enable students to post nicely formatted formulas and equations. Simply enclose your formula or equation a in $$ on both sides, or \[ and \] and the LaTex will be automatically rendered when you post.
Here's an example:
$$ x = {a \over b} $$
Which renders to
More about LaTex - https://en.wikibooks.org/wiki/LaTeX/Special_Characters
Please see the attached pdf for a library of mathematical, formatting, and language LaTex functionalities that are possible for your pins.