Π‘ΡΠ°Π½ΠΈΡΠ»Π°Π²7 Π»Π΅Ρ Π½Π°Π·Π°Π΄
1) 4/(2x + 1) - (2x + 5)/(2x + 1) = (-2x - 1) / (2x + 1) = 1;
2) (6x + 7)/(1 - 2x) + (5x + 4)/(2x - 1) = (6x + 7)/(1 - 2x) - (5x + 4)/(1 - 2x) = (x - 3) / (1 - 2x);
3) 3/x + 4x - 3x/(x-1) = ((3x - 3) + 4(x - 1) - 3x^2) / x (x -1) =(-3x^2 + 7x - 4) / x(x - 1);
4) (3x - 1)/x^2 -2x - 1/3x + 2 + 5/x = (3(3x - 1) - 6x^3 - x + 6x^2 + 30x) / x^2 = (-6x^3 + 6x^2 + 38x - 1) / x^2.