Réponses

2014-05-01T20:57:16+02:00
1)
G = 4x² - 4x + 1 + 6x² + 10x - 3x - 5
G = 10x² + 3x - 4

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

3)
2x-1 = 0         ou          5x+4 = 0
x = 1/2          ou            x = -4/5