Réponses

2013-10-12T17:32:15+02:00
A = (4x+2)(2x-3)+(2x-3)(x-2)
   = (8x²-12x+4x-6)+(2x²-4x-3x+6)
   =  8x²-12x+4x-6+2x²-4x-3x+6
   = 10x²-15x
2013-10-12T17:59:33+02:00
A=(4x+2)(2x-3)+(2x-3)(x-2)  
A =   
(8x² -12x +4x -6) + ( 2x² - 4x -3x +6)
A = 8x² -8x - 6  +2x² -7x +6
A = 10x² -15x