Răspunsuri

  • Utilizator Brainly
2014-09-02T15:45:23+03:00
Daca ab+ba= patrat perfect
⇒atuci:

10a+b+10b+a=patrat perfect
11*a+11*b=patrat perfect
11*(a+b)=patrat perfect
=> a+b=11
=> ab∈{29,38,47,56,65,74,83,92}