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Slmachillot
@Slmachillot
June 2019
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Bonjour, j’ai besoin d’aide pour un dm de maths niveau 3ème.
Je n’arrive pas à développer et réduire cette expression :
E = (3x-4)(3x-4) - (3x-4)(5x-11)
Merci à ceux qui prendront le temps de m’aider !
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Skabetix
Verified answer
Bonjour,
développement et réduire:
E=
9x^2-12x-12x +16-(15x^2-33x-20x+44)
=9x^2 -24x +16 -15x^2 +33x +20x -44
=-6x^2 +29x -28
Bonne journée :)
1 votes
Thanks 1
Skabetix
Ahah de rien, c'est bon tu as compris comment on fait ?
Skabetix
je suis vraiment pas sûr mais je dirais (3x-4)(5x-11)
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Lista de comentários
Verified answer
Bonjour,développement et réduire:
E=
9x^2-12x-12x +16-(15x^2-33x-20x+44)
=9x^2 -24x +16 -15x^2 +33x +20x -44
=-6x^2 +29x -28
Bonne journée :)