Question

Выполните действие
21m^5/25-10m+m^2 * 5-m/7m^4

Answer 1

$frac{21m^5}{25-10m+m^2} * frac{5-m}{7m^4}= frac{21m^5}{(5-m)^2} * frac{5-m}{7m^4}= frac{3m}{5-m}$