Réponses

2014-03-29T16:00:48+01:00


Calcul littéral:

1) (9x - 6) + (-4x + 7)

= 9x - 6 - 4x + 7

= 9x - 4x - 6 + 7

= 5x + 1


2) -4x - (3x² - 2x + 8)

= -4x - 3x² + 2x - 8

= -3x² - 4x + 2x - 8

= -3x² - 2x - 8

2014-03-29T16:22:55+01:00
1) (9x-6)+(-4x+7)
9x-6-4x+7
5x+1

2)-4x-(3x²-2x+8)
-4x-3x²+2x-8
-3x²-2x8