Упростите выражение: Задание 1) и 2)

[latex] \frac{25-8m}{m^2-25}- \frac{m+2}{5-m}\cdot \frac{m}{m+5}= \frac{25-8m}{m^2-25}+ \frac{m(m+2)}{m^2-25}= \frac{25-8m+m^2+2m}{m^2-25}=\\\\ = \frac{m^2-6m+25}{m^2-25} [/latex] [latex] \frac{a^2-144}{a^6}\cdot \frac{a^5}{a^2-24a+144}: \frac{1}{a^2-12a}= \frac{(a-12)(a+12)}{a^6}\cdot \frac{a^5}{(a-12)^2}\cdot a(a-12)=\\\\ =a+12 [/latex]