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fait (racine 5 + 2 racine 3 )^3

By: USER2521
28 Agustus 2025 mathematiques 5 minutes
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Grade: Education Subject: mathematiques
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fait (racine 5 + 2 racine 3 )^3
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bonjour,

(√5+2√3)^3 =
a³+3a²b+3ab²+b³

(√5)³ + 3[(√5)²*√3)]+3(√5*(2√3)² + (2√3)³ =
5√5+(3*5*2√3)+(3*√5*4*3)+24√3 =
5√5+30√3+36√5+24√3 =
41√5+54√3

Answered on 28 Agustus 2025

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