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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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AhYan
Bonsoir,
A = -2n (n-3) + 3 (n²-5n) - (n²-4n+1)
a.
A = -2n² + 6n + 3n² - 15n - n² + 4n - 1
A = -5n - 1
b.
n = -4/5
A = -5×(-4/5) - 1
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.
A = -2n² + 6n + 3n² - 15n - n² + 4n - 1
A = -5n - 1
b.
n = -4/5
A = -5×(-4/5) - 1
A = 4 - 1
A = 3