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Meline0412
@Meline0412
May 2019
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Bsr pouvez vous developper et reduire ceci je n'y arrive pas :
(2x+1)au carre - (2x+1)(x+3)
merci
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luwan
Verified answer
(2x+1)² est une identité remarqueble
(2x+1)² - (2x+1)(x+3)
= (4x² + 1 + 4x) - (2x² + 6x + x + 3)
= 4x² + 1 + 4x - 2x² - 6x - x - 3
=2x² - 3x - 2
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luwan
de rien
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meline0412
January 2021 | 0 Respostas
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Verified answer
(2x+1)² est une identité remarqueble(2x+1)² - (2x+1)(x+3)
= (4x² + 1 + 4x) - (2x² + 6x + x + 3)
= 4x² + 1 + 4x - 2x² - 6x - x - 3
=2x² - 3x - 2