What two numbers add to 2 multiply to negative 168?

Answer 1

170

Answer 2

14 and -12.

The factor pairs of 168 are:

1 x 168

2 x 84

3 x 56

4 x 42

6 x 28

7 x 24

8 x 21

12 x 14

To produce -168, one of the pair must be negative and as such, their sum is the difference of their values.

With a sum of positive 2, a difference of 2 is required with the smaller factor negative.

12 & 14 have a difference of 2, so the smaller must be negative giving:

-12 x 14 = 168

-12 + 14 = 2.