I have some questions that received some upvote but no answer in many months. For someone of these I've started a bounty, but without success (one example was: Multitangent to a polynomial function, and now I've one active bounty at:Nested solutions of a quadratic equation. and I hope that some answer comes).
I'm thinking to post the same questions to Mathoverflow, but I see that this site is for professionals, and maybe that my questions are not so interesting for professional mathematicians, so I don't know if this is a good idea. There is some ''rule of good manners'' or ''best practice'' that I must know?