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Minamax31
@Minamax31
April 2019
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Bonjour,Je dois factoriser cette expression x²+8x+16 pouvez-vous m'aider svp et me détailler comment faire merci
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winner123
Verified answer
( x + 4)² identité remarquable
1 votes
Thanks 4
PAU64
Verified answer
On reconnaît l'identité remarquable suivante :
a² + 2ab + b² = (a + b)²
Donc, x² + 8x + 16 = x² + 2 * 4 * x + 4²
= (x + 4)²
Vérification :
il faut développer (x + 4)²
(x + 4)² =
x² + 2 * x * 4 + 4² =
x² + 8x + 16
Donc, c'est juste ! :)
2 votes
Thanks 3
PAU64
* désigne "fois"
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Verified answer
( x + 4)² identité remarquableVerified answer
On reconnaît l'identité remarquable suivante :a² + 2ab + b² = (a + b)²
Donc, x² + 8x + 16 = x² + 2 * 4 * x + 4²
= (x + 4)²
Vérification : il faut développer (x + 4)²
(x + 4)² =
x² + 2 * x * 4 + 4² =
x² + 8x + 16
Donc, c'est juste ! :)