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Ajakeswary26
@Ajakeswary26
April 2019
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Pouvez vous m aider, c un exo noter
Resoudre les eauation suivantes:
a.x²-4=0
b.3x²-9x=0
c.4x²=3x
d.x=x²
e.3x²-5=5x²-5+3
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winner123
Verified answer
Bonjour
a) x² - 4 = 0
x² = 4
x = √4 = 2
b) 3 x² - 9 x = 0
3 x( x - 3) = 0
soit 3 x = 0 et x = 0
soit x -3 = 0 et x = 3
c) 4 x² = 3 x
4x² - 3 x = 0
x(4 x -3) = 0
soit x = 0
soit 4 x - 3 = 0
4 x = 3 et x = 3/4
d) x² = x
x = √x
e) je pense qu'il manque un x
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ajakeswary26
e.3x²-5=5x²-5+3
ajakeswary26
e.3x²-5=5x²-5+3X
ajakeswary26
e.3x²-5=5x²-5+3x
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Verified answer
Bonjoura) x² - 4 = 0
x² = 4
x = √4 = 2
b) 3 x² - 9 x = 0
3 x( x - 3) = 0
soit 3 x = 0 et x = 0
soit x -3 = 0 et x = 3
c) 4 x² = 3 x
4x² - 3 x = 0
x(4 x -3) = 0
soit x = 0
soit 4 x - 3 = 0
4 x = 3 et x = 3/4
d) x² = x
x = √x
e) je pense qu'il manque un x