Finding the determinant of a 3×3 matrix

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Introduction – Method

$\text{If } A= \begin{pmatrix} 2 & -1 & 3 \\4 & 5 & 1 \\-6 & 3 & -2 \end{pmatrix}$

Find the determinant of a matrix A using:

1) The 1st row

2) The 2nd row

3) The 3rd row

4) The 1st column

5) The 2nd column

6) The 3rd column