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Lauratal136
@Lauratal136
April 2019
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Je dois développer et réduire
E= (2x-1)*2-(3x+5)*2
J'y arrive mais je tombe jamais sur le même résultat
Merci de m'aider
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Commentaires (1)
E= (2x-1)²-(3x+5)²
(4x²-4x+1)-(9x²+30x+25) =
4x²-4x+1-9x²-30x-25 =
-5x²-34x-24
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Thanks 1
lauratal136
merci c'est bien ce que j'avais trouvé mais après il faut que je factorise mais j'y arrive pas ça par contre ...
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(4x²-4x+1)-(9x²+30x+25) =
4x²-4x+1-9x²-30x-25 =
-5x²-34x-24