Write the minors and cofactors of each element of the first column of the following matrices and...

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Write the minors and cofactors of each element of the first column of the following matrices and hence evaluate the determinant in each case:
\[
A=\left[\begin{array}{rrrr}
2 & -1 & 0 & 1 \\
-3 & 0 & 1 & -2 \\
1 & 1 & -1 & 1 \\
2 & -1 & 5 & 0
\end{array}\right]
\]
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