\[\left| x^{2} - 3x + 1 \right| = \left| x^{2} + 5x - 5 \right|\]
\[x^{2} - 3x + 1 = x^{2} + 5x - 5\]
\[5x + 3x = 1 + 5\]
\[8x = 6\]
\[x = \frac{6}{8} = \frac{3}{4}.\]
\[x^{2} - 3x + 1 = - \left( x^{2} + 5x - 5 \right)\]
\[x^{2} - 3x + 1 = - x^{2} - 5x + 5\]
\[x^{2} + x^{2} - 3x + 5x + 1 - 5 = 0\]
\[2x^{2} + 2x - 4 = 0\ \ \ \ \ \ \ \ |\ :2\]
\[x^{2} + x - 2 = 0\]
\[D\text{=}1^{2} - 4 \cdot ( - 2) = 1 + 8 = 9\]
\[x_{1} = \frac{- 1 + \sqrt{9}}{2} = \frac{- 1 + 3}{2} = \frac{2}{2} = 1\]
\[x_{2} = \frac{- 1 - \sqrt{9}}{2} = \frac{- 1 - 3}{2} = \frac{- 4}{2} =\]
\[= - 2\]
\[Ответ:\ \frac{3}{4};\ 1;\ \ - 2.\]