Find all integral solutions of the equation . My attempt:
The equation can be re-written as
By inspection (-1, 2), (-1, -2), (2, 7) and (2, -7) are solutions. Are these the only solutions?
Last edited by CaptainBlack; Jul 24th 2011 at 02:28 AM.
Reason: It is not our practice to delete threads
Follow Math Help Forum on Facebook and Google+