1510
The factors of 8 are 1, 2, 4, and 8. The factors that add up to 10 are 2 and 8.
The factors that multiply to 120 and add up to -8 are -12 and 10. This is because when you multiply -12 and 10, you get -120, and when you add them together, you get -8. Thus, the pair of factors you are looking for is (-12, 10).
10 and 1490
-10 and +10.
The 8 factors of 56 are 1, 2, 4, 7, 8, 14, 28, and 56. 2 and 8 add up to 10. Also, 1, 2, and 7 add up to 10.
268
-10 & -18
-46
-589
35
12610
34