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Sagot :

Bonsoir,

C = 2x² + x = x × 2x + x × 1 = x(2x + 1)

F = 6x² - 9x = 3x × 2x - 3x × 3 = 3x(2x - 3)

I = 42x² - 24x = 6x × 7x - 6x × 4 = 6x(7x - 4)

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