Răspuns:
Fie ecuatia \
ax²+bx+c=0 a≠0
Se calculeaza discriminantul Δ
Δ=b²-4ac
DacaΔ>0 ecuatia admite 2 radacini reale distincte
x1/2=(-b±√Δ)/2
DacaΔ=0 Ecuatia admite 2 radacini reale confundate x1=x2
Daca Δ<0ecuatia admite 2 solutii complexe conjugate
x1/=(-b-√Δ)/2=(-b-i√lΔl)/2
x2=(-b+√Δ)/2=(-b+i√lΔl)/2
Explicație pas cu pas:
