Задание 150 (а) Решите пожалуйста по действиям
10m - 5(в знаменателе второй дроби)
[(2m+1)/(2m-1) - (2m-1)/(2m+1)] / (4m/(10m-5)) = = [(2m+1)² - (2m-1)²]×(10m-5) / (4m(2m-1)(2m+1)) = = [(2m+1-2m+1)(2m+1+2m-1)×(10m-5) / (4m(2m-1)(2m+1)) = = (2×4m×(10m-5)) / (4m(2m-1)(2m+1)) = = 10(2m-1) / (2m-1)(2m+1) = = 10 / 2m+1