If A= [ cc 3 & -5 2 & 5 ], then cofactor of a _ 12 is____________ - Vidyadip

Question

If $A=\left[\begin{array}{cc}3 & -5 \\ 2 & 5\end{array}\right]$, then cofactor of $a _{12}$ is____________

✓

Answer

$-2$

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