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MathNet 2019-part-07 — 184 problems (EN–VI) Question 76

Math Olympiad Vault · MathNet 2019-part-07 — 184 problems (EN–VI)

Question 76

A polynomial $x^2 + 1$ is written on the blackboard. Every day Kate wipes off currently written polynomial $F(x)$ and writes one of the $F^2(x) + 1$ and $F(x^2 + 1)$ instead, choosing at her discretion. Prove that the constant (free) term will exceed $2^{2^{222}}$ in one year.

(Arseniy Nikolaev)