Question

3)calcule a soma da matriz dada abaixo ​

Answer 1

$\left[ \begin{array}{cc} a & 1 \\ 2 & b \\ \end{array}\right]+\left[ \begin{array}{cc} 3 & d \\ c & -5 \\ \end{array}\right]=\left[ \begin{array}{cc} a+3 & d+1 \\ c+2 & b-5 \\ \end{array}\right]$