Răspunsuri

Cel mai inteligent răspuns!
2014-10-22T13:20:29+03:00
Cele doua cifre pot lua valorile:

x\in \{1,2,3...,9\}\\ \\ y\in \{0,1,2,3,...,9\}

Iei si verifici toate posibilitatile, de ex.:

x=1\ \ y=0\ \ \ \Rightarrow \ \ \ 10=(1+0)^2-2\ \ \ \ (Fals)\\ \\ x=1\ \ y=1\ \ \ \Rightarrow \ \ \ 11=(1+1)^2-2\ \ \ \ (Fals)\\ \\ .........etc.........

La final, bagi in multimea ceruta acele numere care au verificat relatia.
2 5 2