Use this website for formula
How to write a matrix:
<math> \begin{matrix}
a & b \\
d & e
\end{matrix}</math>
The & sign separates columns and the "\\" separates the rows
Chemical formula: Sulphuric Acid -
![{\displaystyle {\bar {a}}}](https://en.wikipedia.org/api/rest_v1/media/math/render/svg/6513ea66e4b94de05c92bc66f00e6e021d1c2a9c)
Failed to parse (unknown function "\nroot"): {\displaystyle \nroot{x}{y} }
![{\displaystyle {\sqrt[{x}]{y}}}](https://en.wikipedia.org/api/rest_v1/media/math/render/svg/58c28156258e3c4cf15e8af14abcc0163150e3e6)