Concursul Nicolae Paun editia 2009 subiectul I
Posted: Sun Dec 13, 2009 12:23 pm
Rezolvati in multimea numerelor naturale sistemul:
\( \left\{\begin a-b=xy-3 \\ x-y=ab-3 \right \)
Cristinel Mortici
\( \left\{\begin a-b=xy-3 \\ x-y=ab-3 \right \)
Cristinel Mortici