Ononot — Find the trace of A^2 if A = \begin{pmatrix} 1 & 0 & 1 \\ 2

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Matriceshard

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Find the trace of $A^2$ if $A = \begin{pmatrix} 1 & 0 & 1 \\ 2 & 1 & 0 \\ 0 & 2 & 1 \end{pmatrix}$ .