Edit: My problem has been solved about 12 hours after that I wrote this meta post.

I wish to answer this question but it seems that it is impossible to answer it.

It is written that "To answer this question you need to have at least 10 reputation in this site "

But I have this 10 reputation!

What is the reason that I am unable to answer? There is no an "Answer" button there.

Ways to prove the fundamental theorem of algebra

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