Réponses

  • Utilisateur Brainly
2014-03-14T21:28:26+01:00
F(x)=2x²-4x+5
    =2(x²-2x)+5
    =2(x-1)²-2+5
   =2(x-1)²+3

g(x)=-3(x+1)(x-4)
     =-3(x²-3x-4)
     =-3(x²-3x)+12
     =-3(x-3/2)²+3*9/4+12
     =-3(x-3/2)²+75/4

h(x)=(2x-3)/(x+1)
     =(2x+2-5)/(x+1)
     =(2x+2)/(x+1)-5/(x+1)
     =2-5/(x+1)