User blog comment:Unknown95387/I need another help/@comment-27513631-20170818144756

Look on the page that has what you want to learn how to do on it, and click the 'edit page' button at the top right, but do not select VisualEditor. All of the code used in the page will be displayed for you. Just find the text around what you're looking for and you should be able to figure out the markup used.

Also, for LaTeX, \(10^100\) is \​(10^100\), \(10_5\) is \​(10_5\), \(10^100_5\) is \​(10^100_5\), in case that's also useful.