Réponses

2013-06-07T12:45:20+02:00

B=5(3y+1)+4(3y+2)(3-2y)

B=15y+5+4(9y-6y+6-4y)

B=15y+5+36y-24y+24-16y

B=11y+29

 

C=(2h-8)(5+2h)-((2-h)(5-3h))

C=10h+4h²-40-16h-(10-6h-5h+3h²)

C=10h+4h²-40-16h-10+6h+5h-3h²

C=h²+5h-50

 

A=2(3x-1)-4(2+3x)

A=6x-2-8-12x

A= - 6x -10