Réponses

Meilleure réponse !
2013-10-13T14:03:24+02:00
B= -4x(8x-15)+(-3+x)X 2x
= -32x²+60x+(-6x)+2x²
= -30x²+60x-6x
= -30x²+54x
= 6x(-5x+9)

E=(2x+3)(8-11x)
=16x-22x²+24-33x
= -22x²-17x+24
= 2(-11x²+12)-17x
2013-10-13T14:04:35+02:00
E=developpe
16x - 22xaucarré +24-33x
E= 22xaucarré-17x+24