Réponses

  • Utilisateur Brainly
2014-03-07T14:15:12+01:00
A=(√3-5)(7-√3) 
=7
V3-35-3+5V3
=-38+12V3

B=(2√3-5)(7-2√3) 
=14V3-35-4*3+10V3
=-47+24V3

C=(1+√3)²
=4+2V3

D=(√3-1)²-(√3+1)²
=3-2V3+1-3-2V3-1
=-4V3

E=√5(√5+3)

=5+3V5