Bonjour,
Développer réduire et ordonner.
A = (6x - 4) - (2x - 8)
A = 6x - 4 - 2x + 8
A = 4x + 4
B = (6x - 4)(2x - 8)
B = 6x*2x + 6x*(-8) + (-4)*2x + (-4)*(-8)
B = 12x² - 48x - 8x + 32
B = 12x² - 56x + 32
C = (6x - 4) + (2x - 8)
C = 6x - 4 + 2x - 8
C = 8x - 12
D = 6x - 4(2x - 8)
D = 6x - 8x + 32
D = -2x + 32
Bonne journée.
