Question

Me ajudeeeem
a) 3i 1
5 2
Calcule os determinantes

Answer 1

$\left[\begin{array}{ccc}3i&1\\5&2\\\end{array}\right] =3i*2-5=-5+6i$

Answer 2

Boa noite Stephanny 

l3i  1l
l 5  2l

det = 3i*2 - 1*5 = 6i - 5