What is the standard way to include math equations in a CS research paper? I am currently working on a research paper in Computer Science which involves quite a few math equations. I am using MS Word currently to write the paper. I haven't yet included the equations. I am planning to send it to a journal. 

I have a previously published paper in IEEE Digital Xplore for which I used LibreOffice Writer in Ubuntu to specify the equations and the content. I thought it wouldn't matter what platform I used because I would later convert the document into PDF format. But in the actual paper available on the website, the equations all look pixelated and downright illegible. 

http://ieeexplore.ieee.org/document/7518940/

My question is, what is the standard way of specifying equations for a research paper? Should I convert the whole document to LaTex and specify equations there? If so, should I look up on the particular journal format to use before including the content?
If you can write in latex, you should write on it versus word. The latex is specially designed to work with technical documents with a lot of mathematical equations. 

Also, you can write math equations in word using built-in equation editor of Microsoft word or MathType as a better alternative than built-in ones. 
See this link for word equation for equation writing in Word with better configuration. 

Technically the MathType produces equations with higher equality than Word built-in and I recommend it to use as a macro on Word.

About writing in Latex and then revert to Word, it wouldn't be recommended and will be reduced the quality of equations (due to reversion complexities and equation editors' of Word difficulties).