7. In an Argand diagram the points representing the numbers \(2 + 3 \mathrm { i }\) and \(1 - \mathrm { i }\) are two adjacent vertices of a square, \(S\).
- Find the area of \(S\).
- Find all the possible pairs of numbers represented by the other two vertices of \(S\).
[0pt]
[BLANK PAGE]