Question

Determinați perechile de numere naturale (x,y) știind că (x-3)•(y+3)=24

Answer 1

x apartine {4,5,6,7,9,11}
y apartine {0,1,3,5,9}
(x,y) apartine{(4,21),(5,9),(6,5),(7,3),(9,1),(11,0)}