Réponses

2013-03-10T19:38:21+01:00

E = 36 - 12x + x² + (18 - 3x - 24x + 4x²)

= 36 - 12 x + x² + 18 - 17x + 4x²

= 5x² - 29x + 54

2013-03-10T19:39:37+01:00

E=36-12x+x²+(3-4x)(6-x)

36-12x+x²+3*6+3*(-x)-4x*6-4x*(-x)

36-12x+x²+18-3x-24x+4x²

5x²-39x+54