Is 28, 45, 53 a Pythagorean Triple?

Question

28, 45, 53

Answer 1

Note the definition here:

http://en.wikipedia.org/wiki/Pythagorean_triple

c^2 = a^2 + b^2

If a, b, and c are a "triple", then ka, kb, and kc are also

 

In the 3 numbers provided, 53 cannot be factored, so we need to do the test on the actual numbers

28^2 = 784

45^2 = 2025

sum:  2809

53^2 = 2809

 

Yes, they are a pythagorean triple