Réponses

2014-03-14T13:17:25+01:00
Bonjour
x = 4 
x = 0
 x = – 2
3(2x – 7) – 5x = 6x - 21 -5x = x -21
(x – 4)(x – 2) = x² -2x -4x +8 = x² -6x +8
(2 – x)2
= 4 - 4x +16