cine ma ajuta delta=?
[tex] \times {}^{?2} - \times + 1 = 0[/tex]
[tex] \times {?}^{2?} - 1 = 0[/tex]
...... ?
![Cine Ma Ajuta Deltatex Times 2 Times 1 0textex Times 2 1 0tex class=](https://ro-static.z-dn.net/files/d1f/5af14ce723054f46413381fd92806598.jpg)