Réponses

2014-01-26T16:03:01+01:00
G= (5x-1) (2x+3) - (5x-1)²
G= 10x² + 15x - 2x -3 - (25x² +10x + 1)
G= 10x² + 13x - 3 -25x² - 10x -1
G= -15x² + 3x - 4

G= (5x-1) (2x+3) - (5x-1)²
G= (5x-1) (2x+3-5x+1)
G= (5x-1) (-3x+4)

Voilàa