Ononot — Find the determinant of the matrix A = \begin{pmatrix} 1 & 0

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Determinantsmedium

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Find the determinant of the matrix $A = \begin{pmatrix} 1 & 0 & 2 \\ 0 & 1 & 0 \\ 3 & 0 & 1 \end{pmatrix}$ by expanding along the second row.