Question

determinante da matriz B

Answer 1

aplica sarri

2 3 1| 2 3
4 6 5| 4 6
0 3 1| 0 3

det B = 2.6.1+3.5.0+1.4.3 - (0.6.1+3.5.2+1.4.3)
= 12+0+12-(0+30+12)
= 24-42
= -18  letra D

Answer 2

Alternativa D) det = -18