Ответ det(A-λ*E)=|{{5-λ, 6, 3}, {-1, 0-λ, 1}, {1, 2, -1-λ}}|=-λ^3+4*λ^2+4*λ-16=-(λ+2)*(λ^2-6*λ+8)=-(λ+2)*(λ-2)*(λ-4)=0
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Ответ det(A-λ*E)=|{{5-λ, 6, 3}, {-1, 0-λ, 1}, {1, 2, -1-λ}}|=-λ^3+4*λ^2+4*λ-16=-(λ+2)*(λ^2-6*λ+8)=-(λ+2)*(λ-2)*(λ-4)=0