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Chupachups9
@Chupachups9
April 2019
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Factoriser l'expression (3x+2)²-49x²
Merci de détailler !
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Bonjour
(3x+2)² - 49x² = (3x + 2)² - (7x)²
= [(3x + 2) + 7x][(3x + 2) - 7x] en utilisant la formule : a² - b² = (a+b)(a-b)
= (3x + 2 + 7x)(3x + 2 - 7x)
= (10x + 2)(-4x + 2)
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helloyousra
Comment je vais ecrire la puissance si je veux te repondre
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(3x+2)² - 49x² = (3x + 2)² - (7x)²
= [(3x + 2) + 7x][(3x + 2) - 7x] en utilisant la formule : a² - b² = (a+b)(a-b)
= (3x + 2 + 7x)(3x + 2 - 7x)
= (10x + 2)(-4x + 2)