Réponses

2014-03-22T18:14:42+01:00
(4x-16)(2x+1)-(3x-11)(2x+1) =0
8X²+4x-32X-16-(6X²+3x-22X-11=0
8x²-28X-16-6X²-3X+22X-11=0
2X²-9X-27=0


X=-1/2
2x²-9x-5

2(-1/2)²-9(-1/2)-5

2(2/4)+9/2-5
1+9/2-5
-4+9/2=1/2