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Sagot :

Bonjour,

F = (4x - 2)² - (x - 5)(3 - 2x)

F = 16x² - 16x + 4 - (3x - 2x² - 15 + 10x)

F = 16x² - 16x + 4 - (-2x² + 13x - 15)

F = 16x² - 16x + 4 + 2x² - 13x + 15

F = 18x² - 29x + 19

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