If \( A=\left[\begin{array}{ll}2 & 3 \\ 1 & 2\end{array}\right] \) and \( I=\left[\begin{array}{...
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0If \( A=\left[\begin{array}{ll}2 & 3 \\ 1 & 2\end{array}\right] \) and \( I=\left[\begin{array}{ll}1 & 0 \\ 0 & 1\end{array}\right] \), then prove that \( A^{3}-4 A^{2}+A=O \)
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