Question

Rezolati in ZxZ ecuatia xy-2x-3y=5
Va roggg repede! multumesc!

Answer 1

xy -2x-3y=5   Transformăm expresia într-un produs  (adunăm 6 la ambii membrii ai ei )⇒ xy-2x - 3y +6=11     x(y-2) -3(y-2)=11   ( x-3)(y-2)=1×11 ⇒ 2 variante ; 1) x-3=1, y-2= 11 ⇒ x=4, y=13                                                                                           2) x-3=11,  y-2=1 ⇒   x=14, y=3