Question

2 - Qual o resultado da expressão: *
passo a passo:​

Answer 1

Resposta:

$\\\left[\begin{array}{cc}4&-17\\-5&11\end{array}\right]$

Explicação passo-a-passo:

$\left[\begin{array}{cc}2&0\\-1&3\end{array}\right] -\left[\begin{array}{cc}1&5\\4&-2\end{array}\right] -3.\left[\begin{array}{cc}-1&4\\0&-2\end{array}\right] =\\\\\left[\begin{array}{cc}2&0\\-1&3\end{array}\right] -\left[\begin{array}{cc}1&5\\4&-2\end{array}\right] -\left[\begin{array}{cc}3.(-1)&3.4\\3.0&3.(-2)\end{array}\right] =\\\\\left[\begin{array}{cc}2&0\\-1&3\end{array}\right] -\left[\begin{array}{cc}1&5\\4&-2\end{array}\right] -\left[\begin{array}{cc}-3&12\\0&-6\end{array}\right] =$

$\left[\begin{array}{cc}2-1-(-3)&0-5-12\\-1-4-0&3-(-2)-(-6)\end{array}\right] =\\\left[\begin{array}{cc}4&-17\\-5&11\end{array}\right]$