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margauxsyna
@margauxsyna
January 2021
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Bonsoir, je n'y comprends rien, pouvez vous m'aider ?
Factorise l'expression suivante :
( 4x + 5 ) au carré + ( 4 x + 5) ( - 8 x + 4 )
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ficanas06
Verified answer
( 4x + 5 )² + ( 4 x + 5) ( - 8 x + 4 )
on factorise par 4x+5
(4x+5) ((4x+5)+(-8x+4)
(4x+5) (4x+5-8x+4)
(4x+5)(-4x+9)
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gsantha
Verified answer
Bonsoir
Il faut d'abord que tu trouves le facteur commun et ensuite tu simplifies :
(4x + 5)² + (4x + 5) (-8x + 4)
= (4x + 5) (4x + 5) + (4x + 5) (-8x + 4)
= (4x + 5) [ (4x + 5) + (-8x + 4) ]
= (4x + 5) (4x + 5 - 8x + 4)
= (4x + 5) (-4x + 9)
Voilà ^^
1 votes
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Lista de comentários
Verified answer
( 4x + 5 )² + ( 4 x + 5) ( - 8 x + 4 )on factorise par 4x+5
(4x+5) ((4x+5)+(-8x+4)
(4x+5) (4x+5-8x+4)
(4x+5)(-4x+9)
Verified answer
BonsoirIl faut d'abord que tu trouves le facteur commun et ensuite tu simplifies :
(4x + 5)² + (4x + 5) (-8x + 4)
= (4x + 5) (4x + 5) + (4x + 5) (-8x + 4)
= (4x + 5) [ (4x + 5) + (-8x + 4) ]
= (4x + 5) (4x + 5 - 8x + 4)
= (4x + 5) (-4x + 9)
Voilà ^^