Question

calcule o determinante de:
| 3 -7 2|
| 4 1 -1|
| -2 2 3|

Answer 1

3*1*3 + (-7*-1*-2) + 2*4*2 - (-2*1*2) - (4*-7*3) - (3*2*-1)
9 - 14 + 16 + 4 + 84 + 6
105