Fie [tex]S = x_{1}+x_{2} = \frac{-b}{a} = \frac{1}{ \sqrt{2}} \\
P = x_{1}x_{2} = \frac {c}{a} = \frac{-\sqrt{3}}{\sqrt{2}}\\ \\
x_{1}^{2}+x_{2}^{2} = (x_{1}+x_{2})^{2} - 2x_{1}x_{2} = S^{2} - 2P [/tex]
Tot ce ai de facut sunt calcule.
Unde n-ai inteles intrebi.
