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Mxlemanon1
@Mxlemanon1
April 2019
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Est-ce que quelqu'un pourrais m'aider c'est pour demain !
L'affirmation suivante est-elle vraie ? Justifie.
"Pour n'importe quel entier naturel n, (n+1) au carré - (n-1) au carré
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winner123
Verified answer
Bonjour
( n +1)² - ( n -1)² = différence de 2 carrés
= ( n +1 +n -1) ( n +1 - n + 1)
= ( 2 n ) ( 1) = 2 n
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Thanks 1
Mxlemanon1
est-ce un multiple de 4 ?
winner123
2 n est pair donc sera multiple de 4
Mxlemanon1
merci beaucoup
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Verified answer
Bonjour( n +1)² - ( n -1)² = différence de 2 carrés
= ( n +1 +n -1) ( n +1 - n + 1)
= ( 2 n ) ( 1) = 2 n