# Inverse of $\begin{bmatrix}2& -1 \\-5 & 3 \end{bmatrix}$ is
$\begin{array}{1 1}(1)\begin{bmatrix} 2& -1 & \\ -5& 3\end{bmatrix}&(2)\begin{bmatrix} -2 & 5 \\ 1& -3 \end{bmatrix}\\(3)\begin{bmatrix} 3 & -1 \\-5&-3 \end{bmatrix}&(4)\begin{bmatrix} -3 & 5 \\-2&1 \end{bmatrix}\end{array}$