\[y = 2x^{2} + 2;\ \ y = 5x;\]
\[2x^{2} + 2 = 5x\]
\[2x^{2} - 5x + 2 = 0\]
\[D = 25 - 16 = 9\]
\[x_{1} = \frac{5 + 3}{4} = 2;\]
\[x_{2} = \frac{5 - 3}{4} = \frac{2}{4} = 0,5.\]
\[Ответ:x = 0,5;x = 2.\]