Pythagorean triples can be easily identified by expressing the equation as (p+q)^2-(p-q)^2 = 4pq which clearly has an integer square root if both p and q have integer square roots.

## Pythagorean Triples

Pythagorean triples can be easily identified by expressing the equation as (p+q)^2-(p-q)^2 = 4pq which clearly has an integer square root if both p and q have integer square roots.