Réponses

2013-10-17T19:17:45+02:00
5(x-3)+(x+2)(x-4)=
5x-15+(x²-4x+2x-8)
5x-15+x²-4x+2x-8
x²+3x-23
2013-10-17T19:31:40+02:00
5 ( x - 3) + ( x + 2) (x - 4) =
5x -15 + (x² -4x +2x -8)
5x -15 +x² -4x +2x -8
x² +3x -23