Question

ME AJUDEMMM É URGENTE!!

Answer 1

Elementos da matriz:

$a_{11}=1+1=2\\a_{12}=1-2=-1\\a_{13}=1-3=-2\\a_{21}=2-1=1\\a_{22}=2+2=4\\a_{23}=2-3=-1\\a_{31}=3-1=2\\a_{32}=3-2=1\\a_{33}=3+3=6$

A matriz:

$\left[\begin{array}{ccc}2&-1&-2\\1&4&-1\\2&1&6\end{array}\right]$