Réponses

2013-10-10T18:24:10+02:00
A = 6x + 4x - 7x + 7 - 3 - 5 
A = 3x - 1 

B = (- 16x + 6x - 3) - ( 4x + 4x - 7)
B = - 16x + 6x - 8x - 3 - 7 
B = - 18 - 4 

C = 3(2x + 4) + 5(4x + 2)
C = 3 x 2x + 3 x 4 + 5 x 4x + 5 x 2
C = 6x + 12 + 20x + 10
C = 26x + 22

D = 4 x 2x + 4 x (-3) + (-3) x 5 + (-3) x (-6x)
D = 8x + (-12) + (-15) + (-18x)
D = -10x - 27

E et F je sais pas :(