There is an infinite number of solutions to this problem. Some answers are 26 and 1, 30 and 5, and 56 and 31.
17 and 4 have a difference of 13 and is a factor pair of 68
There are an infinite number of numbers that have a difference of 16, 16 and 0 is a pair that fits this.
25 and 49.
25 and 49.
2 and 3 No other pair.
2 and 3 is the only pair.
They are 25+49 = 74
big cheese
16 -9
When the order in which they are given makes no difference.
For a pair of numbers, the answer is the complex conjugate pair: 12.5 ± 21.9943 i where i is the imaginary square root of -1.
25