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Find all polynomials P(x) of the smallest possible degree

Source: Austrian Mathematical Olympiad 2002, Part 2, D2, P1

June 25, 2011
algebrapolynomialalgebra proposed

Problem Statement

Find all polynomials P(x)P(x) of the smallest possible degree with the following properties:
(i) The leading coefficient is 200200; (ii) The coefficient at the smallest non-vanishing power is 22; (iii) The sum of all the coefficients is 44; (iv) P(āˆ’1)=0,P(2)=6,P(3)=8P(-1) = 0, P(2) = 6, P(3) = 8.