bonjour
factoriser 5x³ - 20x
5x³ - 20x = 5x*x² - 5x*4
= 5x(x² - 4)
= 5x (x² - 2²) différence de deux carrés
= 5x(x - 2)(x + 2)
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bonjour
factoriser 5x³ - 20x
5x³ - 20x = 5x*x² - 5x*4
= 5x(x² - 4)
= 5x (x² - 2²) différence de deux carrés
= 5x(x - 2)(x + 2)