Ah, what a delightful puzzle we have here! To find two numbers that multiply to -196 and add up to 21, we must think creatively. The numbers we're looking for are 28 and -7. See how they come together like old friends, each complementing the other in a beautiful mathematical dance.
what two factors of -21 add up to -6
21
57
7 & 3
-175
The numbers are: -1 and -20
21
-3367
-4 and -17
111
341
-17