\[5x^{2} - 7x + 2 = 0\]
\[D = 49 - 40 = 9\]
\[x_{1} = \frac{7 + 3}{10} = 1;\]
\[x_{2} = \frac{7 - 3}{10} = \frac{4}{10} = 0,4.\]
\[Ответ:x = 0,4;x = 1.\]