Réponses

2013-12-09T20:33:49+01:00
(2X+1)(2X+1+3X-8)
(2X+1)(5X+7)


(4X+3)(4X+3+2X-8)
2013-12-09T20:51:48+01:00
Bonsoir

A = (2x + 1)² + (3x - 8)(2x + 1)
A = (2x + 1)(2x + 1) + (3x - 8)(2x + 1)
A = (2x + 1)[(2x + 1) + (3x - 8)]
A = (2x + 1)(2x + 1 + 3x - 8)
A = (2x + 1)(5x - 7)

B = (4x + 3)² + (2x - 8)(4x + 3)
B= (4x + 3)(4x + 3) + (2x - 8)(4x + 3)
B= (4x + 3)[(4x + 3) + (2x - 8)]
B = (4x + 3)(4x + 3 + 2x - 8)
B = (4x + 3)(6x - 5)