Write a Pythagorean triplet whose one member is.

18

Dear Student

For any natural number m, we know that 2m, m²–1, m²+1 is a Pythagorean triplet.
2m=18
⇒m=18/2
=9
m²–1=9²–1
= 81–1
= 80
m²+ 1 = 9²+ 1
= 81+1
=82
∴ (18, 80, 82) is a Pythagorean triplet

Thanks