Bonjour, dans mon DM de math je dois factoriser (x-5)²-1 avec l'identité remarquable a²-b².
Pouvez vous m'aider svp merci d'avance.

By: USER6763
27 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques
Bonjour, dans mon DM de math je dois factoriser (x-5)²-1 avec l'identité remarquable a²-b².
Pouvez vous m'aider svp merci d'avance.
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Answer (137)

Best Answer
(184)
(x - 5)² - 1
= (x - 5)² - 1²                       (On a a² - b²)
= (x - 5 - 1)(x - 5 + 1)             (factorisation : (a + b)(a - b))
= (x - 6)(x - 4)
Answered on 27 Agustus 2025

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