Question

O valor do determinante
3 2 1
1 3 2
0 1 0

(A) 0
(B) -5
(C) 5
(D) -7
(E) 7

Answer 1

3.3.0+2.2.0+1.1.1 -1.3.0-3.2.1-2.1.0=

0+0+1-0-6-0=

1-6=

-5