Expand by use of minors:?

Question

3 4 -2
6 4 3
0 4 2

Answer 1

.....4...3
.....4...2

times 3

minus

.....6...3
.....0...2

times 4

plus

.....6...4
.....0...4

times -2

Answer 2

USe row 3

0{ 4-2} - 4 {3 -2} + 2{34}
...{4..3} .......{6 3}.......{64}


0 - 4(9+12) + 2(12-24)

0 - 4(21) + 2(-12)

0 - 84 - 24 = -108