This is LaTeX code:
[latex]
\left| \begin{array}{c c c} x-1 & y+1 & z+1 \\ 4 - 1 & -3 +1 & 1 + 1 \\ 1 -1 & 2 + 1 & 4 + 1 \end{array} \right| = 0
[/latex]