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C:\Users\utilisateur\Dropbox\1. URBA DOSSIERS EN COURS ...

(A+B)² = A² + B² + 2.A.B_2.X.3.X = 6.X². Simplifications. (A-B)² = A² + B² - 2.A.B. (A.B)² = A².B2. 2.12² = 2L. ?X = X1/2. (2.X)² = 4.X². (X³)²=x6 ?x=x1/5.



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