Réponses

2013-11-01T15:03:01+01:00
Bonjour

(3/x+1) -4 = (3/x+1) - (4x-4 /x+1)

5/(2x-1) - (3x+1/3-x) = (15 -5 x /(2x+1)(3-x) - (6x² +2x -3x -1)/(2x+1)(3-x)
= (15x-5)/(2x-1)(3-x) - (6x² -x -1)/ (2x-1)(3-x)

11/(2x-10) - (5x/7x-35) = (77x -385/(2x-10)(7x -35) - (10x² -50x)/(x-10)(7x-35)