Pourriez vous développer et réduire le a et b. Merci.... Pergunta de ideia dedelphinecalon

delphinecalon @delphinecalon

January 2021 1 28 Report

Pourriez vous développer et réduire le a et b. Merci

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maudmarine

Verified answer

Bonjour,

A = 4 (x - 3) + (2x + 3) (4 - x)
A = 4x - 12 + 8x - 2x² + 12 - 3x
A = - 2x² + 4x + 8x - 3x - 12 + 12
A = - 2x² + 9x

B = (2x + 1) (2x - 1) - (x + 5) ((3x - 2)
B = 2x² - 1 - 3x² - 2x + 15x - 10
B = 2x² - 3x² - 2x + 15x - 1 - 10
B = - x² + 13x - 11

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