They are 16 and 9
They are: 36-1 = 35
They are 25 minus 16 = 9
270
289 - 256 = 33
The two square numbers that add up to 225 are 144+81 = 225
3
7 squared and 3 squared. 49 - 9 = 40
92
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).
the " difference ".
Square numbers.