There are infinitely many pairs. One such pair is 1 and -21.
You multiply them like two normal numbers and the negative sign cancels them both out.
The two numbers that add to give you 25 and multiply to give you 26 are 24 and 1. When you add 24 and 1, you get 25, and when you multiply them, you get 26.
Plus or minus square root of 2304.
-82
-17
You multiply them like two normal numbers and the negative sign cancels them both out.
27
Plus or minus square root of 2304.
The numbers are: 20 and -48
-82
736
69
-17
144 and 126
33 and 6
28 and 7
11 and 11