Réponse :
Bonjour,
4x+7x² = x(4+7x)
9x² - 72 = 9x² - 9*8 = 9 (x²-8)
4x² - 24x = 4x² - 6*4x = 4x(x - 6)
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Réponse :
Bonjour,
4x+7x² = x(4+7x)
9x² - 72 = 9x² - 9*8 = 9 (x²-8)
4x² - 24x = 4x² - 6*4x = 4x(x - 6)