12
5 and -3
-5 and 3
10
The numbers are: -5 and 3
-1 and 18
40
The two numbers that multiply to make 40 and add to make -13 are -8 and -5. When you multiply -8 and -5, you get 40, and when you add them together, you get -13.
1 and 9
16 and 9
31 & 67
113 and 2
The two square numbers that add together to make 100 are 36 and 64. Specifically, (6^2 = 36) and (8^2 = 64). When you add them together, (36 + 64 = 100).