20
15
14
71
248
24
15
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).
-8 and +7
Well first think this... There's going to be a negative and a positive factor. (+)*(-)=(-) We know that the positive is going to be bigger because the 12 is not negative. The only factors that make 8 are 2*4=8 and 1*8=8. So it isn't possible to multiply -8 and add to 12.
The numbers that multiply to -12 and add to 6 are 8 and -2. When you multiply 8 by -2, you get -12, and when you add them together, 8 plus -2 equals 6. Thus, the solution to the problem is 8 and -2.
6 and 2
They are -2 and -4
22
14
A negative and a positive number will multiply to a negative number. Other than that, -9 and -8 will satisfy your conditions.
57
71