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lagirafeofficielle
@lagirafeofficielle
April 2022
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Bonjour
Est ce que vous pouvez m'aider pour la question 1.
Merci
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Teamce
Bonjour,E = (4x - 9)(8x - 3) - (12 - 2x)(8x - 3)Développer E:E = (4x - 9)(8x - 3) - (12 - 2x)(8x - 3)E = 4x*8x + 4x*(-3) + (-9)*8x + (-9)*(-3) - (12 - 2x)(8x - 3)E = 32x² - 12x - 72x + 27 - (12 - 2x)(8x - 3)E = 32x² - 84x + 27 - (12 - 2x)(8x - 3)E = 32x² - 84x + 27 - [12*8x + 12*(-3) + (-2x)*8x + (-2x)*(-3)]E = 32x² - 84x + 27 - (96x - 36 - 16x² + 6x)E = 32x² - 84x + 27 - (-16x² + 102x - 36)E = 32x² - 84x + 27 + 16x² - 102x + 36E = 32x² + 16x² - 84x - 102x + 27 + 36E = 48x² -186x + 63Factoriser E:E = (4x - 9)(8x - 3) - (12 - 2x)(8x - 3)E = (8x - 3)(4x - 9 - (12 - 2x))E = (8x - 3)(4x - 9 - 12 + 2x)E = (8x - 3)(6x - 21)* = multiplicationBonne journée.
1 votes
Thanks 1
lagirafeofficielle
Merci beaucoup
lagirafeofficielle
La réponse est excellente désolée je me suis trompée avec les étoiles
Teamce
Pas de problème ;)
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