If P= (8,5),(7,2) find :P + P^t - Vidyadip

Question

If $P= (8,5),(7,2)$ find $:P + P^t$

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Answer

$\begin{array}{l}P=\left|\begin{array}{ll}8 & 5 \\ 7 & 2\end{array}\right|_{2 \times 2} \end{array} $
$ P+P^t=\left|\begin{array}{ll}8 & 5 \\ 7 & 2\end{array}\right|+\left|\begin{array}{ll}8 & 7 \\ 5 & 2\end{array}\right| $
$ =\left|\begin{array}{cc}16 & 12 \\ 12 & 4\end{array}\right|_{2 \times 2}$

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