[−10034029−7]\left[\begin{array}{rrr}-1 & 0 & 0 \\3 & 4 & 0 \\2 & 9 & -7\end{array}\right]−13204900−7
[835100460]\left[\begin{array}{lll}8 & 3 & 5 \\1 & 0 & 0 \\4 & 6 & 0\end{array}\right]814306500
[00−5029−143]\left[\begin{array}{rrr}0 & 0 & -5 \\0 & 2 & 9 \\-1 & 4 & 3\end{array}\right]00−1024−593
[973014002]\left[\begin{array}{lll}9 & 7 & 3 \\0 & 1 & 4 \\0 & 0 & 2\end{array}\right]900710342
