Question

Прошу помощи! Задача на фото.

Answer 1

$\frac{5a}{a^2-b^2} : \frac{25a^2}{(a-b)^2}= \frac{5a}{(a-b)(a+b)}* \frac{(a-b)^2}{25a^2}= \frac{a-b}{5a(a+b)}$

Answer 2

5a/(a²-b²) : 25a²/(a-b)²=5a*(a-b)²/(a-b)(a+b)25a²=(a-b)/5a(a+b)