57
There are none because the discriminant of 12x-x2-45 = 0 is less than zero
3.5903 and 28.4097 (to 4 dp).
The numbers are 2 and -5
The numbers are: 6 and -27
12
0.6592 and 30.3408 (to 4 dp).
44
3.5903 and 28.4097 (to 4 dp).
15
The numbers are 9 and 7
The numbers are 3 and 25
The numbers are 80 and -75
The numbers are 2 and -5
The numbers are: 6 and -27
-70
12
0.6592 and 30.3408 (to 4 dp).
There are no whole numbers that satisfy your request.