Respuestas

2013-10-10T21:14:58+02:00
2 + 2/ ( x+1) ( 3 - 6/(x+2) ( 1 + 1/x) =( 2 ( x+1) + 2)(x+1) ( 3 ( x+2) -6 )/ ( x+2) ( x+1)/x =
( 2x +2+2)/(x+1) (3x +6 -6)/(x+2) (x+1)/x = ( 2x+4)/(x+1)   (3x)/(x+2)  (x+1)/x =
2(x+2)/(x+1)  3x/(x+2) (x+1)x  = 6