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lisaredoutez
@lisaredoutez
January 2021
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Bonjour,
J'aurais besoin d'aide.. je comprend pas.
Pour le 34 juste le a)
merci de votre aide.
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ggdu19
Verified answer
Bonjour ,
34.
a)
3x^2 - 17x - 6 = 0
Δ = b^2 - 4ac
= (-17)^2 - 4 * 3 * (-6)
= 289 - (-72)
= 289 + 72
= 361
x1 = -b-√Δ/2a
x1 = -(-17) - √361 / 2*3
x1 = 17-19/6
x1 = -2/6
x1 = -1/3 .
x2 = -b+√Δ/2a
x2 = -(-17)+√361/2*3
x2 = 36/6
x2 = 6 .
3 votes
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lisaredoutez
Mercci infiniment!! :))))))))))
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Verified answer
Bonjour ,34.
a)
3x^2 - 17x - 6 = 0
Δ = b^2 - 4ac
= (-17)^2 - 4 * 3 * (-6)
= 289 - (-72)
= 289 + 72
= 361
x1 = -b-√Δ/2a
x1 = -(-17) - √361 / 2*3
x1 = 17-19/6
x1 = -2/6
x1 = -1/3 .
x2 = -b+√Δ/2a
x2 = -(-17)+√361/2*3
x2 = 36/6
x2 = 6 .