|-2 2 -4 0;
4 -1 3 5;
3 1 -2 -3;
2 0 5 1|
=-2*
|1 -1 2 0;
4 -1 3 5;
3 1 -2 -3;
2 0 5 1|
=-2*
|1-12 0
0 3-5 5
04 -8-3
0 2 1 1|
=
-2*
|1-12 0
0 1-6 4
04 -8-3
0 2 1 1|
=
-2*
|1-12 0
0 1-6 4
0016-19
0 013 -7|
=
-2*
|1-12 0
0 1-6 4
0016-19
0 00 135/16|
=-2×1×1×16×135/16
=-270