Réponses

2014-05-29T13:31:12+02:00
Bonjour

A : 16x² - 9 = (4x-3)(4x+3)

b : 81x² -9 = (9x -3)(9x +3)

c : (6 - 5x)² - 4 = (6 -5x -2)(6 -5x +2) = (-5x +4)( -5x +8)

d : 9x² -6x +1 = (3x -1)²

e : 16x² +16x +4 = (4x +2)²