Question

Det a { 256 167 -123}

Answer 1

$\left[\begin{array}{ccc}2&5&6\\1&6&7\\-1&2&3\end{array}\right] \left[\begin{array}{ccc}2&5\\1&6\\-1&2\end{array}\right] =$ (2*6*3)+(5*7*-1)+(6*1*2) -(6*6*-1) - (2*7*2) -(5*1*3) = 36 -35 +12 +36 - 28 -15 = 6

Answer 2

Resposta:

(2*6*3)+(5*7*-1)+(6*1*2) -(6*6*-1) - (2*7*2) -(5*1*3) = 36 -35 +12 +36 - 28 -15 = 6

Explicação passo-a-passo: