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Zarfernandes
@Zarfernandes
January 2021
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Bonjour j'ai une question en mathematiques niveau 4°:
Ecrire l'expression sans les parenthese puis la reduire :
A = 5x + (-9x² + 10) - (-6x² + 2) +12
Développer et reduire chaque expression :
A = (-a + 3)(-2a - 1)
B = (9y - 7)(y - 6)
C = (3 - 2a)(15a + 9)
D = (4x + 10)(-8x + 2)
Développer et reduire chaque expression :
A = 7(x + 4) - (2x - 4)(2x + 3)
B = t(t + 2) - (2 - t)(t - 1) + 3(2t - 1)
C = (2x + 1)(3x - 4) - x(6x - 5)
PS : x n'est pas fois mais il c'est la lettre.
Merci beaucoup
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