Răspuns :

Ecuatia de gradul al doilea se scrie in forma echivalenta

x² -S·x +P = 0 unde

S =x₁+x₂ =2-3 =-1

P =x₁·x₂ =2·(-3) =--6

Asadar obtinem ecuatia

x² +x +6 = 0 .