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# If $4*7=121$ and $3 *5=64$ then find the value of $2 *1$

$\begin{array}{1 1} 2 \\ 3 \\ 6 \\ 9 \end{array}$

$4+7 =(11)^2=121$
$3+5=(8)^2=64$
Similarly $2 \times 1 = 2+1=(3)^2=9$