Réponses

Meilleure réponse !
2013-10-22T18:27:25+02:00
4x-(x+3)(x-6)=4x-(x²-6x+3x-18)
=4x-x²+3x+18=7x-x²+18
=-x²+7x+18
2013-10-22T18:30:06+02:00
4x-(x+3)(x-6)
= 4x- (x²-6x+3x-18)
= 4x-x²+6x-3x+18
=-x²+7x+18