Réponses

2014-03-04T20:37:01+01:00
A=16x²-40x+25
C=9x²+54x+81
D=4x²+16x+16+25x²-10x+1
  =29x²+6x+17
E=36x²-60x+25-(4x²-9)
  =32x²-60x+34