Which set of numbers represents a Pythagorean triple?

6,9,12
7,10,12
16,18,25
27,36,45

Not really looking for a answer but rather how to solve this, or is there a formula?

3 answers

https://www.mathsisfun.com/pythagorean_triples.html
Pythagorean triples satisfy the equation
... a^2 + b^2 = c^2
... all the values are integers

the most "known" one is 3-4-5

the sum of the squares of the two smaller values, equal the square of the larger value

multiples also work, eg.
... 3-4-5 ... 6-8-10 ...9-12-15 , etc.
Thanks :)
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