9 and -3
391
Factors are multiplied, not added. The question needs to be something like, "Which two factors of thirty add up to 11?" The answer would then be 5 and 6.
what two factors of -21 add up to -6
-32
119
6 and -1
-3 and 16.
Factors multiply, like 1 x 11. Addends add, like 5 and 6.
-96
-273
27
-7585