Réponses

2014-04-28T15:05:54+02:00
14x -2 
14x = 2
x = 2/14
x = 1/7


2x( 5x + 3 ) + (8x² - 2 ) 
2x*5x +2x*3 + 8x²-2
10x²+6x+8x² -2
18x² +6x -2 
2014-04-28T15:12:25+02:00
Bonjour

4x - 2 =  2x        
 2x( 5x + 3 ) + (8x² - 2 ) =  
10x² +6x + 8x² -2 = 18x² +6x -2