on considère l'expression E=(2x+3)2+(x-1)(2x+3).calculer cette expression E pour x=-2​

By: USER8823
27 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques
on considère l'expression E=(2x+3)2+(x-1)(2x+3).calculer cette expression E pour x=-2​
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Réponse :

E=(2x+3)2+(x-1)(2x+3)
E=(2×-2+3)2+(-2-1)(2×-2+3)
E=(-4+3)2+-3(-4+3)
E=-1×2+-3×-1
E=2+3
E=5

Answered on 27 Agustus 2025
(218)
Bonjour voila :

E = (2x - 2 + 3) * 2 + (- 2 - 1)(2x - 2 + 3)

E = (2x + 3) * 2 + (x - 1)(2x + 3) E = - 1 * 2 - 3x - 1

E = (- 4 + 3) * 2 - 3(- 4 + 3)

E = 2 + 3

E = 5
Answered on 27 Agustus 2025

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