\[\boxed{\text{295.}\text{\ }\text{Еуроки\ -\ ДЗ\ без\ мороки}}\]
\[\left( \frac{9a^{2}}{a^{3} + 64} - \frac{a + 4}{a^{2} - 4a + 16} \right)\ :\frac{8a + 8}{a^{2} - 4a + 16} + \frac{a + 10}{a + 4} = 2\]
\[\frac{9a^{2}}{a^{3} + 64} - \frac{a + 4^{\backslash a + 4}}{a^{2} - 4a + 16} =\]
\[= \frac{9a^{2} - a^{2} - 8a - 16}{(a + 4)\left( a^{2} - 4a + 16 \right)} =\]
\[= \frac{8a^{2} - 8a - 16}{(a + 4)\left( a^{2} - 4a + 16 \right)}\]
\[\frac{8a^{2} - 8a - 16}{(a + 4)\left( a^{2} - 4a + 16 \right)} \cdot \frac{a^{2} - 4a + 16}{8a + 8} =\]
\[= \frac{8\left( a^{2} - a - 2 \right)}{(a + 4)8(a + 1)} =\]
\[= \frac{(a - 2)(a + 1)}{(a + 4)(a + 1)} = \frac{a - 2}{a + 4}\]
\[\frac{a - 2}{a + 4} + \frac{a + 10}{a + 4} = \frac{a - 2 + a + 10}{a + 4} =\]
\[= \frac{2a + 8}{a + 4} = \frac{2(a + 4)}{a + 4} = 2\]