Réponses

2012-11-11T14:28:41+01:00

E=x²+8x+16

= (x + 4)²

 

E=16x²-24x+9

= (4x -3)²

 

E=49x²-25

= (7x-5)(7x+5)

 

E=(3x+7)²-64  

=(3x+7-8)(3x+7+8)

= (3x -1)(3x+15)

= 3(3x-1)(x+5)

 

En espérant t'avoir aidé.