Réponses

2014-01-27T15:16:14+01:00
Pour le
C= 4(3x+2)
C= 4*3x + 4*2
C = 12x + 8

D= 3x (5x - 4)
D= 3x*5x - 3x*4
D= 15x² -12x
2014-01-27T15:30:56+01:00
A= (6X^2+5X-6) + (-4X^2-2X+1)
A= 6X^2+5X-6+(-4X)^2-8X+1
A=12X^2+5X-6+(-16X^2)-8X+1
A=-4X^2-3X-5

B=(3X^2-5X+3)-(5X^2-7X-2)
3X2-5W+3-5X^2+7X+2
9X^2-5X+3-25X^2+7X+2
-16X^2+2X+5

C=4(3X+2)
12X+6

D=3X(5X-4)
15X^2-12
bonjour,
A = 6x²+5x-6-4x²-8x+1
A = 2x²-3x-5
B = -2x²+2x+5