\[\boxed{\text{1004\ (1004).}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[\textbf{а)}\ (5 - 2x)\left( \sqrt{6} - 3 \right) < 0\]
\[\sqrt{6} - 3 < 0,\ \ тогда\]
\[5 - 2x > 0\]
\[2x < 5\]
\[x < 2,5.\]
\[\textbf{б)}\ \left( 4 - \sqrt{10} \right)(3x + 1) > 0\]
\[4 - \sqrt{10} > 0,\ \ тогда\]
\[3x + 1 > 0\]
\[x > - \frac{1}{3}.\]
\[\textbf{в)}\ \frac{\sqrt{3} - \sqrt{2}}{2 + 7x} < 0,\ \ 2 + 7x \neq 0,\]
\[x \neq - \frac{2}{7},\]
\[\sqrt{3} - \sqrt{2} > 0,\ \ тогда\]
\[2 + 7x < 0\]
\[7x < - 2\]
\[x < - \frac{2}{7}.\]
\[\textbf{г)}\ \frac{\sqrt{7} - \sqrt{8}}{4 + 5x} > 0,\ \ 4 + 5x \neq 0,\]
\[x \neq - \frac{4}{5},\]
\[\sqrt{7} - \sqrt{8} < 0,\ \ тогда\]
\[4 + 5x < 0\]
\[5x < - 4\]
\[x < - \frac{4}{5}.\]