Which two square numbers total 64?

The two square numbers that total 64 are 0 and 64 itself, since (0^2 + 8^2 = 0 + 64 = 64). Another pair is 16 and 48, as (4^2 + 8^2 = 16 + 48 = 64). However, strictly speaking, the only perfect square pairs that sum to 64 are 0 and 64.