Given matrix B= [ ll 1 & 1 8 & 3 ]. Find the matrix X if, X=B^2-4… - Vidyadip

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Given matrix $B=\left[\begin{array}{ll}1 & 1 \\ 8 & 3\end{array}\right]$. Find the matrix $X$ if, $X=B^2-4 B$. Hence solve for $a$ and $b$ given $X \left[\begin{array}{l}a \\ b\end{array}\right]=\left[\begin{array}{c}5 \\ 50\end{array}\right]$

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