Question

efetue por favor to precisando ;-;​

Answer 1

$\begin{pmatrix}1&1&1\\ 2&3&4\\ -1&-2&-5\end{pmatrix}-\begin{pmatrix}0&1&2\\ 1&1&3\\ -3&-2&-7\end{pmatrix}+\begin{pmatrix}4&-1&1\\ 0&3&-2\\ 2&1&3\end{pmatrix}$

P1 = Subtrair os elementos.

$=\begin{pmatrix}1-0&1-1&1-2\\ 2-1&3-1&4-3\\ \left(-1\right)-\left(-3\right)&\left(-2\right)-\left(-2\right)&\left(-5\right)-\left(-7\right)\end{pmatrix}$

$=\begin{pmatrix}1&0&-1\\ 1&2&1\\ 2&0&2\end{pmatrix}$

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$=\begin{pmatrix}1&0&-1\\ 1&2&1\\ 2&0&2\end{pmatrix}+\begin{pmatrix}4&-1&1\\ 0&3&-2\\ 2&1&3\end{pmatrix}$

P2 = Somar os elementos.

$=\begin{pmatrix}1+4&0+\left(-1\right)&\left(-1\right)+1\\ 1+0&2+3&1+\left(-2\right)\\ 2+2&0+1&2+3\end{pmatrix}$

Resposta

$=\begin{pmatrix}5&-1&0\\ 1&5&-1\\ 4&1&5\end{pmatrix}$