Question

PROVA!!! POR FAVOR!!!

Answer 1

$A= \left[\begin{array}{ccc}1&3\\0&2\end{array}\right]$

$B=\left[\begin{array}{ccc}-2&1\\0&-3\end{array}\right]$

$C= \left[\begin{array}{ccc}-1&-2\\-3&0\end{array}\right]$

$X + 2.C= A$

Logo:

$X= A - 2.C$

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

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

$X= \left[\begin{array}{ccc}1&3\\0&2\end{array}\right] + \left[\begin{array}{ccc}2&4\\6&0\end{array}\right]$

$X= \left[\begin{array}{ccc}1+2&3+4\\0+6&2+0\end{array}\right]$

$X= \left[\begin{array}{ccc}3&7\\6&2\end{array}\right]$