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GloryN
@GloryN
May 2019
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Onjours ! j'ai la dernière question de mon DM que j'arrive pas à résoudre !
aidez moi svp ! merci beaucoup
(3x+4)(5x-4)-15x
^2=-2(3-5x)
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loulakar
Verified answer
Bonjour,
(3x+4)(5x-4)-15x^2=-2(3-5x)
(3x+4)(5x-4)-15x^2 + 2(3-5x) = 0
15x^2 - 12x + 20x - 16 - 15x^2 + 6 - 10x = 0
-2x - 10 = 0
2x = -10
x = -10/2
x = -5
2 votes
Thanks 2
GloryN
Merci beaucoup de ton aide
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Lista de comentários
Verified answer
Bonjour,(3x+4)(5x-4)-15x^2=-2(3-5x)
(3x+4)(5x-4)-15x^2 + 2(3-5x) = 0
15x^2 - 12x + 20x - 16 - 15x^2 + 6 - 10x = 0
-2x - 10 = 0
2x = -10
x = -10/2
x = -5