MathDB
Polynomials and manipulating roots

Source: 2016 Nigerian Senior MO Round 2

November 16, 2022
algebrapolynomial

Problem Statement

If a,b,c,da, b, c, d are the solutions of the equation x4kx15=0x^4-kx-15=0, find the equation whose solutions are a+b+cd2,a+b+dc2,a+c+db2,b+c+da2\frac{a+b+c}{d^2}, \frac{a+b+d}{c^2}, \frac{a+c+d}{b^2}, \frac{b+c+d}{a^2}.