MathDB
Putnam 1976 A4

Source:

April 18, 2022
college contests

Problem Statement

Let rr be a root of P(x)=x3+ax2+bxāˆ’1=0P(x)=x^3+ax^2+bx-1=0 and r+1r+1 be a root of y3+cy2+dy+1=0,y^3+cy^2+dy+1=0, where a,b,ca,b,c and dd are integers. Also let P(x)P(x) be irreducible over the rational numbers. Express another root ss of P(x)=0P(x)=0 as a function of rr which does not explicitly involve a,b,ca,b,c or d.d.