\[\boxed{\mathbf{591\ (591).\ }Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ 2 < \sqrt{6} < 3\]
\[2)\ 4 < \sqrt{19} < 5\]
\[3)\ 5 < \sqrt{29} < 6\]
\[4)\ 12 < \sqrt{160} < 13\]
\[5) - 10 < - \sqrt{86} < - 9\]
\[6) - 6 < - \sqrt{30,5} < - 5\ \]
\[\boxed{\mathbf{5}\mathbf{9}\mathbf{1}\mathbf{\text{.\ }}Еуроки\ - \ ДЗ\ без\ мороки}\]
\[1)\ \sqrt{- m^{9}} = \sqrt{m^{8} \cdot ( - m)} =\]
\[= m^{4}\sqrt{- m}\]
\[2)\ \sqrt{a^{4}b^{13}} = a^{2}b^{6} \cdot \sqrt{b}\]
\[3)\ \sqrt{4x^{6}y} = - 2x^{3} \cdot \sqrt{y};\ \ x < 0\]
\[4)\ \sqrt{m^{7}n^{7}} = m^{3}n^{3}\sqrt{\text{mn}};\ \ m \leq 0,\]
\[n \leq 0\]
\[5)\ \sqrt{45x^{3}y^{14}} = - 3xy^{7}\sqrt{5x};\ \ \]
\[y < 0\]
\[6)\ \sqrt{64a^{2}b^{9}} = 8ab^{4}\sqrt{b};\ \ \]
\[a > 0\]
\[7)\ \sqrt{242m^{11}b^{18}} =\]
\[= - 11m^{5}b^{9}\sqrt{2m};\ \ \]
\[b < 0\]
\[8)\ \sqrt{- m^{2}n^{2}p^{15}} = - mnp^{7}\sqrt{- p};\ \ \]
\[m > 0,\ n < 0\]