[13−2324−2−45]\left[\begin{array}{rrr}1 & 3 & -2 \\3 & 2 & 4 \\-2 & -4 & 5\end{array}\right]13−232−4−245
[−403215358]\left[\begin{array}{rrr}-4 & 0 & 3 \\2 & 1 & 5 \\3 & 5 & 8\end{array}\right]−423015358
[7−2−1−294−14−2]\left[\begin{array}{rrr}7 & -2 & -1 \\-2 & 9 & 4 \\-1 & 4 & -2\end{array}\right]7−2−1−294−14−2
[02325−6361]\left[\begin{array}{rrr}0 & 2 & 3 \\2 & 5 & -6 \\3 & 6 & 1\end{array}\right]0232563−61
