Too many, ask specific question if stuck.
eg cross out first row and column
| -2 +6 |
| +3 -6 |
= 12 - 18 = -6
find the minors and cofactors of the matrix
[ -3 2 -8]
3 -2 6
-1 3 -6
1 answer
[ -3 2 -8]
3 -2 6
-1 3 -6
1 answer