Ononot — Expand along the first row to find \det(A) where A = \begin{

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Determinantseasy

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Expand along the first row to find $\det(A)$ where $A = \begin{pmatrix} 2 & 1 & 0 \\ 3 & 1 & 2 \\ 1 & 0 & 3 \end{pmatrix}$