6 and -2
13
28 x 10
-377
-2 - 2i and -2 + 2i where i is the imaginary square root of -1.
-134
8
-166
21
-1
The numbers are: 80 and -20
-30
The factor pairs of 24 are (24,1)(12,2)(8,3)(6,4) None of them add up to -4.
17
43
There are several prime numbers that add up to 144 and of it is 71+73 =144
44