Question

выполните действие
РЕШЕНИЕ


ПОМОГИТЕ СРОЧНО!!!!!!!!!!!!!!!

Answer 1

$(frac{6}{a^2+3a}-frac{2}{a}=frac{6}{a(a+3)}-frac{2}{a}=frac{6}{a(a+3)}-frac{2(a+3)}{a(a+3)}=frac{6-2(a+3)}{a(a+3)}=frac{6-2a-6}{a(a+3)}=frac{-2a}{a(a+3)}=frac{-2}{a+3})$

$(frac{a+c}{ac}cdot frac{5ac^2}{a^2-c^2}=frac{a+c}{ac}cdot frac{5ac^2}{(a-c)(a+c)}=frac{(a+c)5ac^2}{ac(a-c)(a+c)}=frac{5c}{a-c})$