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Chacha54630
@Chacha54630
May 2019
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Bonsoir j'ai besoin d'aide pour mon dm de maths c'est l'ex 2 a) et b) svp je suis bloque dessus merci d'avance !
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Christine17
2a)
A=-2n(n-3)+3(n²-5n)-(n²-4n+1)
A=-2n²+6n+3n²-15n-n²+4n-1
A=-5n-1
b)pour n=-4/5
A=4-1
A=3
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Bonsoir j'aurais besoin d'aide pour un exercice de dm c'est l'exercice 2 merci de bien vouloir m'aider! :)
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Une pompe permet de remplir un bassin de 1400 l en 3min30s calculer le debit de cette pompe en metres cube par heure. Merci de bien vouloir m'aider :)
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A=-2n(n-3)+3(n²-5n)-(n²-4n+1)
A=-2n²+6n+3n²-15n-n²+4n-1
A=-5n-1
b)pour n=-4/5
A=4-1
A=3