Упростите выражение: 5/(a+2)^2-5/(a^2-4)-5/(a+2).

\[\frac{5}{(a + 2)^{2}} - \frac{5}{a^{2} - 4} - \frac{5}{a + 2} = \frac{5^{\backslash a - 2}}{(a + 2)^{2}} -\]

\[- \ \frac{5^{\backslash a + 2}}{(a - 2)(a + 2)} - \frac{5^{\backslash a^{2} - 4}}{a + 2} =\]

\[= \ \frac{5a - 10 - 5a - 10 - 5a^{2} + 20}{(a + 2)^{2}(a - 2)} =\]

\[= - \frac{5a^{2}}{(a + 2)²(a - 2)}\]