Question

Alguém pode me ajuda com essa matriz

Answer 1

Resposta:

1) $\left[\begin{array}{ccc}-2& 4\\-6&0\end{array}\right]$

2)$\left[\begin{array}{ccc}-1&-5&-4\\-3&-7&0\end{array}\right]$

3)$\left[\begin{array}{ccc}3&-3&27\\21&42&-24\\0&-15&-15\end{array}\right]$

Explicação passo-a-passo:

1) 2.A

$\left[\begin{array}{ccc}2.(-1)&2.(2)\\2.(-3)&2.(0)\end{array}\right]$= $\left[\begin{array}{ccc}-2& 4\\-6&0\end{array}\right]$

2) $\left[\begin{array}{ccc}(-1).1&(-1).5&(-1).4\\(-1).3&(-1).7&(-1).0\end{array}\right]$= $\left[\begin{array}{ccc}-1&-5&-4\\-3&-7&0\end{array}\right]$

3)$\left[\begin{array}{ccc}(3).1&3.(-1)&(3).9\\(3).7&(3).14&(3).(-8)\\(3).0&(3).(-5)&(3).(-5)\end{array}\right]$= $\left[\begin{array}{ccc}3&-3&27\\21&42&-24\\0&-15&-15\end{array}\right]$