Pouvez vous développer cet expression :
E= ( x - 5 )( x + 1 ) + ( x - 5 ) ( 2x - 3 )

By: USER2464
27 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques
Pouvez vous développer cet expression :
E= ( x - 5 )( x + 1 ) + ( x - 5 ) ( 2x - 3 )
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Answer (90)

Best Answer
(198)
E= ( x - 5 )( x + 1 ) + ( x - 5 ) ( 2x - 3 )
E = x² + x - 5x - 5 + 2x² - 3x - 10x + 15
E = x² + 2x² + x - 5x - 3x - 10x - 5 + 15
E = 3x² - 17x + 10
Answered on 27 Agustus 2025

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Bonjour,quelqu'un pourrait m'aider

Dans un magasin A,un livre coûtant 21.30€ a baissé de 2% et ensuite de 18%.
Dans un magasin B,le même livre a 22.10€ a baissé de 11% et ensuite de 9%.
Eric pense qu'il a intérêt à acheter ce livre dans le magasin B.
A-t-il raison? Justifier a l'aide de calculs.

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Bonjour,
Je bloque sur cette exo… Est-ce que quelqu'un pourrait m'aider?
On note (E) l'équation 2sin²(x)- 3sin(x) + 1 = 0.
Résoudre dans R l'équation d'inconnu.
Résoudre (E) dans ]-π; π] puis dans [0; 2π[.

Merci!!

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résoudre l’équation produit nul :
(-x+2)(-x+6)=0

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-5-10-15-...-2005-2010​

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