Mock AIME 2 2006-2007 Problems/Problem 11

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Problem

Find the sum of the squares of the roots, real or complex, of the system of simultaneous equations

$x+y+z=3,~x^2+y^2+z^2=3,~x^3+y^3+z^3 =3.$

Solution

The sums of the squares of the roots is given in the problem; 3.