It looks like you've entered a matrix:

$\begin{pmatrix} 2 & 5 \\ -3 & 1 \end{pmatrix}$

If you have specific operations you'd like to perform on this matrix (like finding the determinant, inverse, or solving related equations), let me know!

Would you like further details or have any specific questions about matrices? Here are some possible directions:

1. How to calculate the determinant of a $2 \times 2$ matrix.
2. Methods to find the inverse of a $2 \times 2$ matrix.
3. Matrix multiplication and its applications.
4. Matrix transformations and their geometric interpretations.
5. How to solve systems of equations using matrix methods.

Tip: For a $2 \times 2$ matrix $\begin{pmatrix} a & b \\ c & d \end{pmatrix}$, the determinant is calculated as $ad - bc$.