Construct 5 Pythagorean triples using the formula:
(m, (m/s)squared -1, (m/s)squared -1), where m is even.
First of all, what is s? Second of all, it seems you made a typo somewhere because two legs have the same length, and there are no Pythagorean triples like that. Third of all, why haven't you shown any attempt/work?
Edit: Seems to work out if we write instead
$\displaystyle (m, \left(\frac{m}{2}\right)^2-1, \left(\frac{m}{2}\right)^2+1)$ for m even, then just plug in m=4,6,8,...