Réponses

  • Utilisateur Brainly
2014-03-01T20:19:41+01:00
A= (6-2V5) + (V5-3)
A= 6 -2V5 +V5 -3
A= 3 -V5

B= (1+V5)(V5-2)
B= V5 -2 + 25 -2V5
B= 23 -V5

C= (2+V5)(3-2V5)
C= 6 -4V5 +3V5 -50
C= -44 -V5

D= (2+2V5)-(1-2V5)
D= 2 +2V5 -1 +2V5
D= 1 + 4V5