![A=\left[\begin{array}{ccc}2&4&-2\\4&-5&7\\2&7&5\end{array}\right]](/tpl/images/1677/3654/fa261.png)
and ![AB=\left[\begin{array}{ccc}24\\-46\\-2\end{array}\right]](/tpl/images/1677/3654/facba.png)
, what is the value of matrix B?
![\left[\begin{array}{ccc}1\\3\\-5\end{array}\right]](/tpl/images/0680/6179/38ea1.png)
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If and , what is the value of matrix B?
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