If A= [ cc 4 & 2 -1 & 1 ], then (A-2 l)(A-3 l) is equal to - Vidyadip

Question

If $A=\left[\begin{array}{cc}4 & 2 \\ -1 & 1\end{array}\right]$, then $(A-2 l)(A-3 l)$ is equal to

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Answer

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