Réponses

2013-04-23T20:21:03+02:00
A=6(2-3x)-4(5x-3)
A=12-18x-20x+12
A=24-38x

B=(7x-5)(3x-2)
B=21x^2-14x-15x+10
B=21x^2-29x+10

C=(2x+1)(3x-6)+2x-4
C=6x^2-12x+3x-6+2x-4
C=6x^2-7x-10