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Mediterranean M.C. 2010 Problem 1

Source:

July 12, 2010
algebrasystem of equationsalgebra proposed

Problem Statement

Real numbers a,b,c,da,b,c,d are given. Solve the system of equations (unknowns x,y,z,u)x,y,z,u)x2yzzuyu=a x^{2}-yz-zu-yu=a y2zuuxxz=b y^{2}-zu-ux-xz=b z2uxxyyu=c z^{2}-ux-xy-yu=c u2xyyzzx=d u^{2}-xy-yz-zx=d