soit f la fonction defini sur /R par: f(x)=x²-8x+15
Montrer que f(x)=(x-4)²-1

svp aidez moi c pr demain et j'essaie de remonter mes note.

By: USER8937
27 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques
soit f la fonction defini sur /R par: f(x)=x²-8x+15
Montrer que f(x)=(x-4)²-1

svp aidez moi c pr demain et j'essaie de remonter mes note.
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Answer (155)

Best Answer
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[tex](x-4)^2-1=x^2-2 \times x \times 4+4^2-1=x^2-8x+16-1=x^2-8x+15[/tex]
Answered on 27 Agustus 2025

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