Réponses

2014-03-12T12:37:59+01:00
D=8x²-(2x²-5x+3)+(3x²+4x-1)=8x²-2x²+3x²+5x+4x-3-1
D=9x²+9x-4
2014-03-12T12:40:57+01:00

reduire et ordonner E=8x²-(2x²-5x+3)+(3x²+4x-1)

E = 8x² - 2x² + 5x - 3 + 3x² +4x - 1

E = 9x² + 9x -4