Réponses

2012-12-16T18:30:17+01:00

=(2x+1)(x-3)+(x-3)-6x

=(x-3)[(2x+1)-6x]

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

 

(3x-2)²-(2x+1)²=3

(3x-2)²=3 (resout

ou (2x+1)²=3 resout