![\large\boxed{6.\ 2\left[\begin{array}{ccc}2&3\\1&5\end{array}\right] +\left[\begin{array}{ccc}1&2\\3&4\end{array}\right] =\left[\begin{array}{ccc}5&8\\5&14\end{array}\right] }\\\boxed{7.\ 3^2-4(-2+5)=-3}](/tpl/images/0460/4844/720ee.png)
![6.\\2\left[\begin{array}{ccc}2&3\\1&5\end{array}\right] +\left[\begin{array}{ccc}1&2\\3&4\end{array}\right] =\left[\begin{array}{ccc}2\cdot2&2\cdot3\\2\cdot1&2\cdot5\end{array}\right] +\left[\begin{array}{ccc}1&2\\3&4\end{array}\right]\\\\=\left[\begin{array}{ccc}4&6\\2&10\end{array}\right] +\left[\begin{array}{ccc}1&2\\3&4\end{array}\right]=\left[\begin{array}{ccc}4+1&6+2\\2+3&10+4\end{array}\right] \\\\=\left[\begin{array}{ccc}5&8\\5&14\end{array}\right]](/tpl/images/0460/4844/cd2f2.png)
What are the answers for number 6 &
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