Réponses

Meilleure réponse !
2013-03-01T21:07:41+01:00
1)36-12x+2x-(18-3x-24x+4x^2)=
..... 36-10x-18+27x-4x^2....=
18+17x-4x^2.
2013-03-01T21:15:44+01:00
1)
36-12X+X2-(3-4X)(6-X)
=36-12X+X2-(18-3X-24X+4X*X)
=36-12X+2X-18+3X+24X-4X*X
=36-18-17X+24X-4X*X
=18+7X-4X*X

X*X= X au carre
=