Question

A-26
B-14
C-20
D-6
E-15

Answer 1

• Fórmula :

$\begin{bmatrix}a&b\\c&d\\\end{bmatrix} \sf = ad - cb$

• Sendo :

$\sf a = 5$

$\sf b = 3$

$\sf c = 2$

$\sf d = 4$

• Resolução :

$\begin{bmatrix}5&3\\2&4\\\end{bmatrix} \sf = 5\cdot 4 - 2\cdot 3$

$\sf =20 - 6$

$\red{ \sf =14}$

$\boxed{\boxed{\sf Letra \: B}}$