\[(1)\ x_{1} + x_{2} = 3 - \sqrt{11}\]
\[x_{1} \cdot x_{2} = - 3\sqrt{11}\]
\[x_{1} = - \sqrt{11},\ \ x_{2} = 3\]
\[(2)\ - x - 1,5x + 7 = 0\]
\[D = 2,25 + 28 = 30,25\]
\[x_{1} = \frac{1,5 - 5,5}{- 2} = 2\]
\[x_{2} = \frac{1,5 + 5,5}{- 2} = - 3,5\]
\[\lbrack - \sqrt{11};2\rbrack\]
\[Ответ: - 3;\ - 2;\ - 1;0;1;2.\]