Réponses

2014-02-18T18:47:50+01:00
4x² -3x+4-7x²+x-14
-3x²-2x-10

2x-(3x-7)-(-4x+6)+(7x-8)
2x-3x+7+4x-6+7x-8
10x-7

5x² +2x-(10x² +4x-6)+(-4x-1)
5x²+2x-10x²-4x+6-4x-1
-5x²-6x+5