Réponses

2014-02-01T19:18:18+01:00
Bonsoir,

(-2x + 3)(2x + 4) = 0
-2x + 3 = 0   ou  2x + 4 = 0
-2x = -3   ou   2x = -4
x = (-3)/(-2)    ou   x = -4/2
x = 3/2    ou   x = -2

2014-02-01T19:23:32+01:00
(-2x+3)(2x+4)=o
-2x +3 = 0                                    2x +4 = 0
-2x = -3                                        2x = -4
x = -3/-2                                          x = -4/2
x = 3/2                                            x = -2