Recently I asked a question at Math.SE that contained several formulae essential for the question to be understood. While investigating the problem further, I came up with several other very large formulae that might be interesting/useful for people trying to answer the question, so I would like to make them available to the question readers. But I do not want to add them directly to the question, because they would cause it to bloat too much. Ideally, I would create a separate page with these formulae and add a link to it from the question.
Is it possible to do this relying entirely on StackExchange capabilities? Or do I need to search for an external hosting supporting $\LaTeX$/MathJax?