Question

срочно!!!!!!!!!!!!!!!!!!!!!!

Answer 1

Ответ:

$\frac{a-1}{a}*\frac{a^2-4}{a+2}:\frac{a-1}{a}=\frac{a^2-4}{a+2}=\frac{a^2-2^2}{a+2}=\frac{(a-2)(a+2)}{a+2}=a-2$