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If \(P = \begin{vmatrix} 1 & 1 \\ 2 & 1 \end{vmatrix...

If P=|1121|, find (P2+P).

A.

|4361|

B.

|4364|

C.

|2262|

D.

|3264|

Correct answer is B

P2=|1121||1121|

|1×1+1×21×1+1×12×1+1×22×1+1×1|

|3243|+|1121|

|4364|