Réponses

  • Utilisateur Brainly
2013-04-11T21:47:32+02:00

x(x-5)+3=x²-5x+3=(x-5/2)²+3-25/4=(x-5/2)²-13/4  

h(x)=(x-5/2+V13/2)(x-5/2-V13/2)=0 solutions (5-V13)/2 et(5+V13)/2