This add-on lets you automatically convert every mathematical equation in your document into beautiful latex images!

This add-on lets you automatically convert every LaTeX equation in your document into beautiful images! Simply enclose your math equations within $$ … $$ and click the button in the sidebar, and all of your equations will be rendered in LaTeX!

Source: Auto-LaTeX Equations – Google Docs add-on

Latex looks intimidating at first, but it is worth learning.