\[x^{3} - 3x^{2} - 3x + 1 = 0\]
\[\left( x^{3} + 1 \right) - \left( 3x^{2} + 3x \right) = 0\]
\[(x + 1)\left( x^{2} - x + 1 \right) - 3x(x + 1) = 0\]
\[(x + 1)\left( x^{2} - x + 1 - 3x \right) = 0\]
\[1)\ x + 1 = 0\]
\[x = - 1.\]
\[2)\ x^{2} - 4x + 1 = 0\]
\[D_{1} = 4 - 1 = 3\]
\[x_{1,2} = 2 \pm \sqrt{3}.\]
\[Ответ:x = - 1;x = 2 \pm \sqrt{3}.\]