Mathématiques

Question

Exercices 20
3V7 - V28
V= racines carré
V45-V20
Aider moi svp

2 Réponse

  • Bonsoir,

    3V7 - V4x7 = 3V7 - 2V7 = 1V7

    V9x5 - V4x5 = 3V5 - 2V5 = 1V7
  • 3√7 - √28
    = 3√7 -√7*4
    =3√7-√4*√7
    =3√7-2√7
    =√7

    √45-√20
    =√5*√9-√4*√5
    =3√5-2√5
    =√5

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