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correction4 prep 1 DC2

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Préparation Devoir Commun n°2 E4 Calculer : A= 1 2 + 5 1 2 - 5 B= 4t2-5t+1 , calculer pour t=-2 A= 1 2 + 10 2 1 2 10 2 B=4 ×(-2)2 -5 ×(-2)+1 NB: (-2)2 =(-2) ×(-2) =+4 A= 11 2 -9 2 B=4 ×4+10+1 A= -11 2 × 2 9 B=16+10+1 A=11 9 B=27...   [More]

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