Réponses

2014-05-06T18:09:23+02:00
B) (2x+1) - (x-3) = 0 
2x+1-x+3
x +4
x = -4


(x+2) (4x-5) = 0

x+2 = 0         4x-5 = 0
x =  - 2             4x = 5
                          x =5/4

solution (-2;5/4)



Meilleure réponse !
  • Utilisateur Brainly
2014-05-06T18:09:43+02:00
b) (2x+1) - (x-3) = 0
     2x+1-x+3 = 0
    x+4 = 0
  x =-4

(x+2) (4x-5) = 0
x+2 = 0
x =-2

4x-5 = 0
4x =5
x =5/4