Given $A = \left[ \begin{array} { c c } - 5 & 2 \\2 & 4\end{array} \right]$

question 71

Essay

Given $A = \left[ \begin{array} { c c } - 5 & 2 \\2 & 4\end{array} \right]$ , find $3 A$ , or explain why the operation cannot be performed.

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