The numbers are: -1.1345 and -15.8654 to 4 decimal places
A more accurate result can be found by using the quadratic equation formula
THe numbers are 5 and -8
-27
18 and 18
45 and 18
47
89
-21
132
The numbers are 5 and 12
25
-25
The multiples of 4 up to 200 are 4, 8, 12, 16, 20 and just keep adding 4 until you get to 200.