MathDB
p(x^2)=p(x)q(1-x)+p(1-x)q(x)

Source: 2015 Belarus TST 2.4

November 5, 2020
polynomialalgebra

Problem Statement

Find all pairs of polynomials p(x),q(x)R[x]p(x),q(x)\in R[x] satisfying the equality p(x2)=p(x)q(1x)+p(1x)q(x)p(x^2)=p(x)q(1-x)+p(1-x)q(x) for all real xx.
I.Voronovich