You can put this solution on YOUR website! Typically, that form IS already simplified. If you really mean factor the left member, then you might try forming the binomial factors which work:
(5s )(s ) using positive values of 6 and 1 or 2 and 3.
(5s+2)(s+3), (5s+3)(s+2), (5s+1)(s+6), (5s+6)(s+1).
Exactly one of those may work.