Réponses

Meilleure réponse !
2014-10-12T19:14:07+02:00
A = 2x² + 7x
a = x(2x+7)

b= x²+26x+169
b = ( x+13)²

c =(9x²-25)+ (6x+10)
c = (3x-5)(3x+5)+ 2(3x+5)
c = (3x+5)(3x-5+2)
c =(3x+5) (3x-3)

d =x²-4x+4 -(x-2)(7-x)
d = (x-2)² -(x-2)(7-x)
d = (x-2)(x-2-7+x)
d =(x-2)(2x-9)