Question

помогите с примером а/a+2 + a/a-2 ("/" - дробная черта)

Answer 1

$\frac{a}{a+2}+ \frac{a}{a-2}= \frac{a^{2}-2a+a^{2}+2a}{(a+2)(a-2)}= \frac{2a^{2}} {a^{2}-4}$

Answer 2

=(a²-2a+a²+2a)/(a²-4)=2a²/(a²-4)