Aidez moi svp c'est un exercice de brevet.... Pergunta de ideia demargaux0410

margaux0410 @margaux0410

June 2021 1 21 Report

Aidez moi svp c'est un exercice de brevet.

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winner123

Verified answer

Bonjour

D² = (√3 -1) ²= 3 - 2√3 + 1 = 4 - 2√3

E² = ( √3 + 1)² = 3 + 2√3 +1 = 4 + 2√3

D x E = ( (√3 -1)(√3 +1) = 3 - 1 = 2

KM ² = (√3 +1)² + (√3 -1)²
KM² = 4 + 2√3 + 4 - 2√3 = 2

aire = 2 : 2 = 1

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