Factoriser D(x)=(3x-4)^2 -4(5x-1)^2
Mathématiques
gina123
Question
Factoriser D(x)=(3x-4)^2 -4(5x-1)^2
1 Réponse
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1. Réponse Anonyme
(3x - 4)² - 4(5x - 1)²
= (3x - 4 - 4(5x - 1))(3x - 1 + 5x - 1)
= (3x - 4 - 20x + 4)(8x - 2)
= - 17x(8x - 2)