Réponses

2013-10-14T21:29:29+02:00
(3x-1)(2-5x)+(3x+4)x
(6x-15x²-2+5x)+(3x²+4x)
6x-15x²-2+5x+3x²+4x
-12x²+15x-2
2013-10-14T21:31:20+02:00
(3x-1)(2-5x)+(3x+4)x   
(6x -15x² -2 +5x) + 3x² +4x
= -15x² +11x -2 +3x² +4x
= - 12x² +15x -2