Question

determine o valor de cada determinante a) 3 2 5
4 1 3
2 3 4

Answer 1

3 2 5
4 1 3
2 3 4

(3.1.4)+(2.3.2)+(5.4.3)=12+12+60=84
(5.1.2)+(3.3.3)+(2.4.4)=10+27+32=69

det=84-69
det=15