Réponse:
a) 3(x + 2)
b) 4a(a- 3)
c) 5(x² - 4) = 5(x² - 2²) = 5[(x - 2)(x + 2)]
d) 2y(y - 4)
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Réponse:
a) 3(x + 2)
b) 4a(a- 3)
c) 5(x² - 4) = 5(x² - 2²) = 5[(x - 2)(x + 2)]
d) 2y(y - 4)
b) 4a² - 12a = 4a(a - 3)
c) 5x² - 20 = 5(x² - 4) = 5(x + 2)(x - 2)
d) 2y² - 8y = 2y(y - 4)