Réponses

2014-03-23T22:03:41+01:00
Bonsoir

A = (5x-3)(5x-3 -2x +1)
A = (5x-3)(3x -2)

B = (2x +2)²

C = (x+7 +2x -5)(x +7 -2x +5)
(3x +2)(-x +12)
2014-03-23T22:58:14+01:00

Factoriser:

A= (5x- 3)²- (2x-1) (5x-3) 

A = (5x-3) (5x-3 -2x +1)

A = (5x-3)(3x -2)

B = 4x² + 8x + 4

B = (2x +2)²

C = (x+7)² - (2x-5)²

C = (x+7 - 2x +5) ( x+7 + 2x -5)

C = ( - x + 12) ( 3x +2 )