Réponses

2012-11-09T17:47:35+01:00

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

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

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

2012-11-09T17:47:36+01:00

E = 9x² + 12x + 4 - (5 - 2x)(3x +2)

E = 9x² + 12x + 4 - [15x + 10 - 6x² - 4x]

E = 9x² + 12x + 4 - 15x - 10 + 6x² + 4x

E = 15x² + x - 6