how can i solve this polynomial equation?

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MA
MA on 4 Jun 2014
Commented: MA on 4 Jun 2014
clear all clc; syms x A=[x 2 1;1 0 -x;5 1 x]; det(A) r=solve('det(A)==0','x')

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Accepted Answer

Azzi Abdelmalek
Azzi Abdelmalek on 4 Jun 2014
Edited: Azzi Abdelmalek on 4 Jun 2014
syms x
A=[x 2 1;1 0 -x;5 1 x]
r=double(solve(det(A),x))

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