\[Пусть\ \ t = x^{2} + 2x - 2:\]
\[\frac{t}{5} - \frac{6}{5} \cdot \frac{1}{t} = 1\ \ \ \ \ \ \ \ \ \ | \cdot 5t\]
\[t² - 5t - 6 = 0\]
\[t_{1} + t_{2} = 5;\ \ t_{1} \cdot t_{2} = - 6\]
\[t_{1} = 6,\ \ t_{2} = - 1.\]