If A=⎡⎢⎣102021203⎤⎥⎦, prove that A3−6A2+7A+2I=0. – InterviewSolution

1.	If A=⎡⎢⎣102021203⎤⎥⎦, prove that A3−6A2+7A+2I=0.
Answer» If $A = ⎡ ⎢ ⎣ \begin{matrix} 1 & 0 & 2 0 & 2 & 1 2 & 0 & 3 \end{matrix} ⎤ ⎥ ⎦$ , prove that $A^{3} - 6 A^{2} + 7 A + 2 I = 0.$

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