Réponses

  • Utilisateur Brainly
2014-03-24T19:15:22+01:00
(√5+3√2)(√2+√5)
=√10+3√2²+√5²+3√10
=4√10+11

(5√7-3√2)²

=(5√7)²-30√14+(3√2)²
=25*7-30√14+9*2
=211-30√14