25-20x+4x² en factorisations de l'identité remarquable ça donne quoi ?​

By: USER3651
27 Agustus 2025 mathematiques 5 minutes
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Question

Grade: Education Subject: mathematiques
25-20x+4x² en factorisations de l'identité remarquable ça donne quoi ?​
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Answer (71)

Best Answer
(284)

Bonsoir :)

Réponse en explications étape par étape :

- Question : Factoriser l'expression suivante :

A = 25 - 20x + 4x²

A = 4x² - 20x + 25

A = (2x)² - (2 * 2x * 5) + (5)²

A = (2x - 5)²

Voilà

Answered on 27 Agustus 2025
(119)

25 - 20x + 4x² = 4x² -20x + 25 est de la forme (a-b)² = a² - 2ab + b²

donc (2x-5)²

Answered on 27 Agustus 2025

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