Just the Docs sites can be customised to support MathJax, as explained in the configuration suggestions. Pages with math: mathjax2 in the front matter then render \(\mathrm{\LaTeX}\) code in kramdown math blocks using MathJax v2. For example:
math: mathjax2
To see the \(\mathrm{\LaTeX}\) source of the formula, right-click anywhere on it.
Some tests illustrate the use of math in Markdown.