👤

6. Efectuați calculele: a) (2x)/(1 + x) + 2/(x - 1) + (4x)/(x ^ 2 - 1))((2x)/(x + 1) + 2/(x - 1) - (4x)/(x ^ 2 - 1)) b) (x/(x - 1) + 2/(x - 2) - 2/(x ^ 2 - 3x + 2)) / ((x ^ 2 + 3x + 2)/(x ^ 2 + 2x - 3)) : c) ((x + 1)/(2x + 3) - (x - 2)/(2x - 3) + (x - 4)/(4x ^ 2 - 9)) * (2x ^ 2 - x - 3)/(x ^ 2 - 1) d) (4 - (8x)/(x + 2)) / (x/(x - 2) + 4/(x + 2) - (2x + 4)/(x ^ 2 - 4))​