Question

Pra agora!!!!!!!!!!!!!!!!!!!

Answer 1

Resposta:

$D =\left[\begin{array}{ccc}-8&-9&16\\2&4&10\\10&5&5\end{array}\right]$

Explicação passo a passo:

Só somar os elementos correspondentes.

$D =\left[\begin{array}{ccc}1&2&3\\-4&5&6\\4&6&8\end{array}\right] + \left[\begin{array}{ccc}-7&-8&9\\12&6&5\\8&7&4\end{array}\right] - \left[\begin{array}{ccc}2&3&-4\\6&7&1\\2&8&7\end{array}\right]$

$D =\left[\begin{array}{ccc}-6&-6&12\\8&11&11\\12&13&12\end{array}\right] - \left[\begin{array}{ccc}2&3&-4\\6&7&1\\2&8&7\end{array}\right]$

$D =\left[\begin{array}{ccc}-6&-6&12\\8&11&11\\12&13&12\end{array}\right] - \left[\begin{array}{ccc}2&3&-4\\6&7&1\\2&8&7\end{array}\right]$

$D =\left[\begin{array}{ccc}-8&-9&16\\2&4&10\\10&5&5\end{array}\right]$