Bonjour qui peut m'aider pour cet exercice de 3ème
developper et factoriser cette expression
A= (3x-2)(x+1)-(x+1)(-2x+5)

Merci de votre aide

By: USER6739
28 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques
Bonjour qui peut m'aider pour cet exercice de 3ème
developper et factoriser cette expression
A= (3x-2)(x+1)-(x+1)(-2x+5)

Merci de votre aide
Asked by:
164 Viewed 164 Answers

Answer (164)

Best Answer
(143)
Bonjour 
A = 3x² + 3x - 2x - 2 - ( - 2x² + 5x - 2x + 5 )
A = 3x² + x - 2 + 2x² - 5x + 2x - 5 
A = 5x² - 2x - 7 
Answered on 28 Agustus 2025
(163)
3[tex] x^{2} [/tex] + 3x-2x-2 - (-2[tex] x^{2} [/tex]+5x-2x+5) 
= 3[tex] x^{2} [/tex] + 3x-2x-2 + 2[tex] x^{2} [/tex]-5x+2x-5 
= 5[tex] x^{2} [/tex]-2x-7
Answered on 28 Agustus 2025

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