5 5
175
14
The two numbers that add to -8 and multiply to -20 are -10 and 2. This is because -10 + 2 = -8 and -10 * 2 = -20. These numbers satisfy both conditions simultaneously.
-56
45 and 10
34
34
-1
-56
-56
10 and 20, among others. -- Pick any multiple of 10. -- Add 10 to it. -- There you have two numbers whose GCF is 10.
0