Réponses

2014-02-01T19:05:33+01:00
Bonsoir

G= (x+3)² - 25 - (2x+5) (x-2)
(x+3 -5)(x+3 +5) - (2x+5)(x-2)
(x -2)(x +8) - (2x +5)(x-2)
(x-2)(x+8) - (2x+5)
(x-2)(x+8 -2x -5)
(x-2) ( -x +3)