Is there any better way to write math in latex other than $latex **$

Question is as in the title.

Is there any better way to write math in latex other than writing $latex (some code here)$?

This is annoying.

Is there any better way to do this?

I see that theorem environment does not work in latex..

Can you suggest some thing?

I have added necessary plugins and $latex x^2$ is giving me x^2 in math mode.. No problem with that.