Question

rezolvati in N ecuatia

Answer 1

Fie x=a^8-1 ,inlocuieste si obtii ecuatia :(a^4+1)(a^2+1)(a+1)=a^8-1. Descompune pe   a^8-1 ,imparte ecuatia prin expresia din stanga si obtii ecuatia 1=a-1 ,deci a=2 ,deci x=255 .