Réponses

2012-12-05T21:59:19+01:00

Bonsoir

on complique en factorisant  

E = (2x-3)(2x-3) +(2x-3)(x+8) = (2x-3)( 3x+5) 

si x = 3/2  E = 0

2012-12-05T22:35:16+01:00