Réponses

2014-09-28T13:24:30+02:00
D=5(3-2x) 
d = 15 -10x

 E=(4x+6)(x-4)
e = 4x² -16x +6x -24
e = 4x² -10x -24

 F=(2x-4)²
f = 4x² -16x +16


 ; G=(5x-2)(5x+2) 
g = 25x² +10x -10x -4
g = 25x² -4

H=x(4-4x)
h = 4x -4x²