Răspunsuri

2014-08-29T12:21:47+03:00
\triangle=b^2-4ac=(2m)^2-4(m^2-1)\\
\triangle=4m^2-4m^2+4\\
\triangle=4>0
Cand o ecuatie de gradul doi are \triangle>0, stim ca va avea doua radacini reale distincte.