Question

What adds to -8 and multiplies to -20

Answer 1

I assume that you are talking about 2 integers
one of the integers must be negative while the other is positive
we can list integer pairs that multiply to -20:
-20 1
20 -1
-10 2
10 -2
5 -4
-5 4
now the only pair that when you add them together equals -8 is -10 and 2, so
-10 and 2 add to -8 and multiply to -20

Answer 2

My answer is -10 and 2 add to -8 and multiply to -20