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kenzotte
@kenzotte
January 2021
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BONSOIR A TOUS !! :D
Résoudre l'inéquation 7x²-3/x+1 ≤ 2
MERCI D'AVANCE !!!
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danielwenin
Verified answer
(7x²-3)/(x+1) - 2 ≤ 0 => (7x²-3- 2x - 2 )/(x+1) ≤0
(7x² - 2x - 5)/(x+1) ≤ 0
faire un tableau de signe avec
x -1 -5/7 1
7x²-2x-5 + + 0 - 0 +
x+1 - 0 + + +
E(x) - | + 0 - 0 +
S = ]-∞; -1[ U [-5/7;1]
2 votes
Thanks 1
kenzotte
MERCI BEAUCOUP !!! :D
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URGENT svp!! sa fait 1 semaine chui dessus! si quelqu'un peut m'aider, merci!
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URGENT!!! sa fait 1 semaine que je suis dessus (ex 2 seulement)! merci d'avance!
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Verified answer
(7x²-3)/(x+1) - 2 ≤ 0 => (7x²-3- 2x - 2 )/(x+1) ≤0(7x² - 2x - 5)/(x+1) ≤ 0
faire un tableau de signe avec
x -1 -5/7 1
7x²-2x-5 + + 0 - 0 +
x+1 - 0 + + +
E(x) - | + 0 - 0 +
S = ]-∞; -1[ U [-5/7;1]