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P(x^3+1)=(P (x+1))^3

Source: 1991 Greece MO Grade XI p1

September 6, 2024
algebrapolynomial

Problem Statement

Find all polynomials P(x)P(x) , such that P(x3+1)=(P(x+1))3P(x^3+1)=\left(P (x+1)\right)^3