Bonsoir, j'aurais besoin d'aide svp !.... Pergunta de ideia demanonguilmin

manonguilmin @manonguilmin

June 2021 1 105 Report

Bonsoir, j'aurais besoin d'aide svp !

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xxx102

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Bonsoir,

1)Avec une calculatrice on trouve :
A = 1998
B = 110
C = -8

2)Factorisons D.
$D = \left(x+1\right)\left(x-1\right) - \left(x-1\right)^2\\
D = \left(x-1\right)\left(x+1-x+1\right)\\
D = 2\left(x-1\right)$
Comme x-1 est un entier naturel, 2(x-1) est un multiple de 2.

3)Cherchons une valeur de x telle que 2(x-1) = 2008.
On résout :
2x-2 =2008
2x = 2010
x = 1005
On a alors
E = 1006 x 1004 - 1004²

Si tu as des questions, n'hésite pas ! =)

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