Source:NT marathon



  • a,b,cNa,b,c\in\mathbb{N} such that aba-b is prime and 3c2=c(a+b)+ab.3c^2=c(a+b)+ab.Prove that 8c+18c+1 is a perfect square.


Log in to reply
 

Looks like your connection to Expii Forum was lost, please wait while we try to reconnect.