utiliser une des 3 identité remarquables :
(a+b)au carré 
(a-b)au carré 
(a+b )(a-b)
@pour résoudre ces deux équations 
A=(4-5x)(x+1)-(4+5x)au carré 
B=2-x+)2-x)au carré 

By: USER9164
27 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques
utiliser une des 3 identité remarquables :
(a+b)au carré 
(a-b)au carré 
(a+b )(a-b)
@pour résoudre ces deux équations 
A=(4-5x)(x+1)-(4+5x)au carré 
B=2-x+)2-x)au carré 
Asked by:
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Answer (200)

Best Answer
(106)
1. a au carré + 2xaxb + b au carré
2. a au carré - 2xaxb + b au carré
3. a au carré - b au carré
Answered on 27 Agustus 2025

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