Chapter 8 - Section 8.5 - Determinants and Cramer's Rule - Exercise Set - Page 945: 24

$\left| \begin{matrix} 4 & 0 & 0 \\ 3 & -1 & 4 \\ 2 & -3 & 5 \\ \end{matrix} \right|=28$

Expand with ${{R}_{1}}$ $\begin{align} & \left| \begin{matrix} 4 & 0 & 0 \\ 3 & -1 & 4 \\ 2 & -3 & 5 \\ \end{matrix} \right|=4\left( -5-\left( -12 \right) \right) \\ & =4\left( 7 \right) \\ & =28 \end{align}$