Réponses

2013-12-10T14:34:48+01:00
A = 2(3x-5)-(x-6)
A = 6x-10-x+6
A = 5x-4

B = 5x+4-6(5x-4)
B = 5x+4-30x+24
B = -25x+28
2013-12-10T16:22:59+01:00
A=2*3x-2*5-x-(-6)=6x-10-x+6=5x-4
B=5x+4-6(5x-4)=5x+4-30x+24=5x-30x+4+24=-25x+28