Вправи для повторення теми 1 » 31

Подайте у вигляді дробу: 1) 2x – 1/x = (2x^2- 1)/x; 2) 4p – (4p^2- 1)/p = (4p^2- 4p^2+ 1)/p = 1/p; 3) 2/m + 3/(m-1) = (2m-2+3m)/(m(m-1)) = (5m-2)/(m(m-1)); 4) m/(1-m) + (1+m)/m = (m^2+ 1- m^2)/(m(1-m)) = 1/(m(1-m)); 5) c/(3c-1) + c/(3c+1) = (3c^2+ c+3c^2- c)/((3c-1)(3c+1)) = (6c^2)/(9c^2- 1); 6) x/(x-y) – x/(x+y) = (x^2+ xy- x^2+ xy)/((x-y)(x+y)) = 2xy/(x^2- y^2 ).