Réponses

2014-02-18T16:29:54+01:00
A= (3y - 5)-(6y - 2)
3y-5-6y+2
-3y-3

B=(2 - 3y)+(2 - 2y)
2-3y+2-2y
-5y+4

C=3(5y - 1)+2(4 - 3y)
3*5y+3*(-1)+2*4+2*(-3y)
15y-3+8-6y
9y+5

D=(y + 3)(8 - 6y)
y*8+y*(-6y)+3*8+3*(-6y)
8y-6y²+24-18y
-6y²-10y+24

E=-4(7 + 3y)+(2y - 5)(4y - 3)
-4*7-4*3y+2y*4y+2y*(-3)-5*4y-5*(-3)
-28-12y+8y²-6y-20y+15
8y²-38y-13