23. Use Theorem 8.2.1, to find the determinant of the matrix A where A =

$$

\begin{bmatrix}

1 & 3 & 1 & 3 \\

4 & 2 & 2 & 1 \\

4 & 2 & 2 & 3 \\

3 & 1 & 4 & 1

\end{bmatrix}

$$