Réponses

  • Utilisateur Brainly
2013-11-24T16:32:43+01:00
A= √8+7√2
=2
V2+7V2
=9V2

B= √5-√20
=V5-2V5
=-V5

C= 2√3-√75
=2V3-5V3
=-3V3

D= 4√2-5√8+3√18

=4V2-10V2+9v2
=3V2