Réponses

  • Utilisateur Brainly
2014-05-01T17:48:21+02:00
1)
A(x) =  -7x²-11x+6
A(x) = x(-7x-11)+6

2)
A(x) > 6
x(-7x-11)+6>6
x(-7x-11)>0
-7x
²-11x>0