Does there exist a polynomial with integer coefficients such that and ?
Solution
Suppose that there exists such polynomial . Let then . We have and .
Therefore, has an irrational root . Since is irreducible over and has the same root , we get . Then there exists with integer coefficients such that
Because so for some . Let then:
This implies and , which has not a pair integer satisfying, a contradiction. So the answer is no.
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