How many solutions (a,c) are there such that both numbers are positive integers?
Please comment upon the unexpected result.
(In reply to re(2): " as expected"
by Ady TZIDON)
I apologize. It was bad english. I wrote "par difference" in the sense of "even differences".
If the difference of squares is an even number (as here), it must always be multiple of 4.
Posted by armando
on 2018-02-25 03:36:29