$A = [a_{ij}]$ is a 2 × 2 matrix with $a_{ij} = i^2 - j$. Which matrix is $A$?

Explanation

1. 01

   Row 1 ($i = 1$): $1 - 1 = 0$ and $1 - 2 = -1$.

2. 02

   Row 2 ($i = 2$): $4 - 1 = 3$ and $4 - 2 = 2$.

3. 03

   So $A = \begin{bmatrix}0 & -1 \\ 3 & 2\end{bmatrix}$.