Réponses

2013-05-06T15:49:39+02:00

(2x-3)(-2x-8)=0

4x²-16x+6x+24=0

4x²-22x+24=0

4x²-22x=24

4x²-22x/22x = 24

4x²=24

4x²/4x=24

4x=24

4x/4=24/4

x=6