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tim1
@tim1
January 2021
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Bonjour, j'ai besoin d'aide pour cet exercice. merci
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no63
Salut
1) 3/4 n'est pas solution de cette equation car
(4*(3/4)-3)²-9
=> 0-9=0 -9 différent de 0
pour 0
(4*0-3)²-9=0.
9-9=0 0 est solution de cette equation
2) on developpe
=> 16x²-24x
on factorise par 4x
=> 4x(4x-6)
3) les solutions sont
x= 3/2 car 4x-6=0 => x=6/4 soit x=3/2
et x=0
S={ 0 ; 3/2}
1 votes
Thanks 1
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Bonjour, pouvez-vous m'aider. Par avance un grand merci!
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Lista de comentários
1) 3/4 n'est pas solution de cette equation car
(4*(3/4)-3)²-9
=> 0-9=0 -9 différent de 0
pour 0
(4*0-3)²-9=0.
9-9=0 0 est solution de cette equation
2) on developpe
=> 16x²-24x
on factorise par 4x
=> 4x(4x-6)
3) les solutions sont
x= 3/2 car 4x-6=0 => x=6/4 soit x=3/2
et x=0
S={ 0 ; 3/2}