bonsoir comment factoriser ceci: (5X+2)² - ( 5X+2)(X-7)
Mathématiques
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Question
bonsoir comment factoriser ceci:
(5X+2)² - ( 5X+2)(X-7)
(5X+2)² - ( 5X+2)(X-7)
1 Réponse
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1. Réponse Anonyme
(5x + 2)² - (5x + 2)(x - 7)
= (5x + 2)(5x + 2) - (5x + 2)(x - 7)
= (5x + 2)(5x + 2 - (x - 7))
= (5x + 2)(5x + 2 - x + 7)
= (5x + 2)(4x + 9)