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NinMario1
@NinMario1
April 2019
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Voici l'exo 2 de mon DM de Math :
Pour n'importe quel nombre entier n, le nombre (n+1) au carré - (n-1) au carré est un multiple de 4.
Cette affirmation est elle vrai ou fausse ? Justifie.
Voila 19 pts à gagner
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caylus
Verified answer
Bonjour,
Vrai.
En effet, (n+1)²-(n-1)²=[(n+1)+(n-1)][(n+1)-(n-1)]=2n*2=4n qui est un multiple de 4.
1 votes
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Verified answer
Bonjour,Vrai.
En effet, (n+1)²-(n-1)²=[(n+1)+(n-1)][(n+1)-(n-1)]=2n*2=4n qui est un multiple de 4.