Réponses

Meilleure réponse !
2013-10-13T13:31:18+02:00
A= (-x+2)(2x-1)
   -2x²+x+4x-2
   -2x²+5x-2

C = (3y-5)(-y+2)
   =-3y²+6y+5y-10
   = -3y²+11y-10
D= (4+t)(3-2t)
   =12-8t+3t-2t²
   =-2t²-5t+12
2013-10-13T13:35:25+02:00
A= (-x+2)(2x-1)= -2x²+x+4x-2= -2x²+5x-2
   
C = (3y-5)(-y+2)= -3y²+6y+5y-10= -3y²+11y-10
   
D= (4+t)(3-2t)= 12-8t+3t-2t²= -2t²-5t+12