$\LaTeX$ can be included in wiki articles by using <tt><nowiki><math>x_{1,2} = \frac{-b \pm \sqrt{b^2 - 4 a c}}{2 a}...</math></nowiki></tt> tags.
Foo bar For instance, the following line results in: <nowiki><math>x_{1,2} = \frac{-b \pm \sqrt{b^2 - 4 a c}}{2 a}</math></nowiki><math>x_{1,2} = \frac{-b \pm \sqrt{b^2 - 4 a c}}{2 a}</math> <nowiki>$x_i...$ baz </nowiki> and <nowiki>\( ... \)</nowiki> can also be used as maths delimiters, for instance: $y_i \nabla \vec B = m \nabla \cdot Q$ or \( 0 = a x^2 + b x + c_i$c \). [https://www.mediawiki.org/wiki/Extension:SimpleMathJax SimpleMathJax] also supports <nowiki><chem></nowiki> tags, like so: <nowiki><chem>CO2 + C -> 2 CO</chem></nowiki><chem>CO2 + C -> 2 CO</chem>