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Avin
@Avin
January 2021
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Bonjour, je suis en 2nd GT et mon dm de math me pose quelques que soucis :(,
voici l'exercice que je n'arrive pas a faire :
1) Utilisez l'identité remarquable a²-b²=(a-b)(a+b) pour factoriser l'expression (x-3)²-25
determinez le signe de (x-3)²-25 suivant les valeurs de x
2) Déduisez-en la résolution de l'inéquation (x-3)²-25 < 0
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