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Axelotte64
@Axelotte64
April 2019
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Aidez moi svp
a=3(-2x+5)+(-2x+5)(x-3)
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Omnes
Salut,
A=3(-2x+5)+(-2x+5)(x-3)
A = 3*(-2x) + 3*5 + (-2x)*x + (-2x) * (-3) + 5 * x + 5 * (-3)
A = -6x + 15 - 2x² + 6x + 5x - 15
A = - 2x² -6x + 6x + 5x - 15+ 15
A = -2x² + 5x
Bonne journée !
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axelotte64
June 2021 | 0 Respostas
Résoudre les équations suivantes: a) - 2/5x = -1/15 b) 3x=-4/9 C)3/2x-1/2=5/6 d)5/4x=5/2x-4/3 HELP! Svp
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Je voudrais que la dernière questions svp ABC est un triangle rectangle en B tel que : AB=5cm AC=8cm a) calcule l'arrondi de BC b) D est un point tel que que CD=20cm et BD 19cm. D est-il unique? c)Montre que le triangle BCD est rectangle Precise en quel point d) Deduis-en que les point A,B et D sont alignes.
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Axelotte64
April 2019 | 0 Respostas
Développe et réduis cette expression: a=(2a-5)(3-4a)-2(5-a) Heeeeelp!
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Axelotte64
April 2019 | 0 Respostas
C'est le 33 a faire je n'y arrive pas vous pouvez m'aidez svp?
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A=3(-2x+5)+(-2x+5)(x-3)
A = 3*(-2x) + 3*5 + (-2x)*x + (-2x) * (-3) + 5 * x + 5 * (-3)
A = -6x + 15 - 2x² + 6x + 5x - 15
A = - 2x² -6x + 6x + 5x - 15+ 15
A = -2x² + 5x
Bonne journée !