[51−3−472021]\left[\begin{array}{ccc}5 & 1 & -3 \\-4 & 7 & 2 \\0 & 2 & 1\end{array}\right]5−40172−321
[5−40−321172]\left[\begin{array}{ccc}5 & -4 & 0 \\-3 & 2 & 1 \\1 & 7 & 2\end{array}\right]5−31−427012
[15−37−42201]\left[\begin{array}{ccc}1 & 5 & -3 \\7 & -4 & 2 \\2 & 0 & 1\end{array}\right]1725−40−321
[−40521−3721]\left[\begin{array}{ccc}-4 & 0 & 5 \\2 & 1 & -3 \\7 & 2 & 1\end{array}\right]−4270125−31
