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Determine the coefficients

Source: Vietnam NMO 1988 Problem 2

February 2, 2009
algebrapolynomialalgebra unsolved

Problem Statement

Suppose P(x) \equal{} a_nx^n\plus{}\cdots\plus{}a_1x\plus{}a_0 be a real polynomial of degree n>2 n > 2 with a_n \equal{} 1, a_{n\minus{}1} \equal{} \minus{}n, a_{n\minus{}2} \equal{}\frac{n^2 \minus{} n}{2} such that all the roots of P P are real. Determine the coefficients ai a_i.