MathDB
MMATHS 2021, Problem 9

Source:

October 31, 2021
YaleMMATHS

Problem Statement

Suppose that P(x)P(x) is a monic cubic polynomial with integer roots, and suppose that P(a)a\frac{P(a)}{a} is an integer for exactly 66 integer values of aa. Suppose furthermore that exactly one of the distinct numbers P(1)+P(1)2\frac{P(1) + P(-1)}{2} and P(1)P(1)2\frac{P(1) - P(-1)}{2} is a perfect square. Given that P(0)>0P(0) > 0, find the second-smallest possible value of P(0).P(0).
Proposed by Andrew Wu