9 and 36
-45
8 and 9
34 = 9 + 25 = 3² + 5²
No even numbers add up to 9. The sum of even numbers is always an even number.
9 9
9 and 9
8 + 9 = 17
16 and 9
The two square numbers which add up to 13 are 9 (which is equal to 3 squared), and 4 (which is equal to 2 squared).
4 and 9.
-9 and 10
9 and 36
5 and 4
-45
There are two sets of two numbers that have cubes that add up to 1729 are {1, 12} : 1³ + 12² = 1 + 1728 = 1729 {9, 10} : 9³ + 10³ = 729 + 1000 = 1729
71