Question

Qual das alternativas abaixo representa 3A + 2B – 5C , sendo

Answer 1

Resposta:

Leia abaixo

Explicação passo-a-passo:

$A = \large\mathsf{\begin{vmatrix}1&4\\2&2\end{vmatrix}}$

$B = \large\mathsf{\begin{vmatrix}2&1\\3&1\end{vmatrix}}$

$C = \large\mathsf{\begin{vmatrix}1&3\\0&1\end{vmatrix}}$

$3A + 2B -5C = \large\mathsf{\begin{vmatrix}3(1) + 2(2) - 5(1)&3(4) + 2(1) - 5(3)\\3(2) + 2(3) - 5(0)&3(2) + 2(1) - 5(1)\end{vmatrix}}$

$3A + 2B -5C = \large\mathsf{\begin{vmatrix}2&-1\\12&3\end{vmatrix}}$