Question

Me ajudemmmmmmmmmm Por favor

Answer 1

Explicação passo-a-passo:

$D=\left[\begin{array}{ccc}-6&4&0\\1&1&4\\-6&0&6\end{array}\right]$          $E=\left[\begin{array}{ccc}6&9&-9\\-1&0&-4\\-6&0&-1\end{array}\right]$

$D+E=\left[\begin{array}{ccc}-6&4&0\\1&1&4\\-6&0&6\end{array}\right]+\left[\begin{array}{ccc}6&9&-9\\-1&0&-4\\-6&0&-1\end{array}\right]$

some cada elemento da matriz D com cada elemento correspondente da matriz E

$D+E=\left[\begin{array}{ccc}-6+6&4+9&0+(-9)\\1+(-1)&1+0&4+(-4)\\-6+(-6)&0+0&6+(-1)\end{array}\right]$

$D+E=\left[\begin{array}{ccc}-6+6&4+9&0-9\\1-1&1+0&4-4\\-6-6&0+0&6-1\end{array}\right]$

$D+E=\left[\begin{array}{ccc}0&13&-9\\0&1&0\\-12&0&5\end{array}\right]$

primeira alternativa