Verified answer

Объяснение:

[tex]3 {x}^{2} - 5x - 2 = 0 \\ D = 25 + 24 = 49 = {7}^{2} \\ x_{1} = \frac{5 + 7}{6} = \frac{12}{6} = 2 \\ x_{2} = \frac{5 - 7}{6} = \frac{ - 2}{6} = - \frac{1}{3} [/tex]