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JEEMAIN and NEET
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Mathematics
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Class12
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Matrices
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If $A$ and $B$ are two matrices such that $AB=B$ and $BA=A$ then $A^2+B^2=$
$\begin{array}{1 1}(A)\;2AB&(B)\;2BA\\(C)\;A+B&(D)\;AB\end{array}$
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