Réponses

2014-03-04T20:50:47+01:00
Bonsoir

A = 3(x +1)
B = (x+1)(3x+4 + x-3) = (x+1)(4x +1)
D = (x+1)(2x-9) + 4x +4 = (x+1)(2x -9) + 4(x +1)
(x+1)(2x- 9 +4) = (x+1)(2x -5)
F = 25x² -64 = (5x -8)(5x +8)
G = (2y -5)² -9 = (2y -5 -3)(2y -5 +3) = (2y -8)(2y -2)
C = (x+1)² + x+1 = (x+1)(x+1)
E = (x+1)(2x-6) - (x+1)(4x -5) = (x+1)(2x-6 - 4x +5) = (x+1)(-2x -1)
H = (3x+1)² - (x+8)² = ( 3x+1 +x+8)(3x+1 -x-8) = (4x +9)(2x -7)