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Pasdepseudodu93
@Pasdepseudodu93
May 2019
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Bonjour j'ai besoin d'aide pour factoriser les expressions suivantes :
H = 5(2-7x) + 12(2-7x)
I = (4x-1)(x+6)-(4x-1)(2x-7)
J = 4xé - 49
mercii
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Juulien
Verified answer
Bonjour,
H = 5(2-7x) + 12(2-7x)
H = (2-7x)(5+12)
H = 17(2-7x)
I = (4x-1)(x+6)-(4x-1)(2x-7)
I = (4x-1)[(x+6)-(2x-7)]
I = (4x-1)(x+6-2x+7)
I = (4x-1)(-x+13)
J = 4x² - 49
On voit ça comme un a² - b² = (a+b)(a-b)
J = (2x+7)(2x-7)
2 votes
Thanks 1
greencalogero
Verified answer
Bonjour,
H=5(2-7x)+12(2-7x)
H=(2-7x)(5+12)
H=17(2-7x)
I=(4x-1)(x+6)-(4x-1)(2x-7)
I=(4x-1)(x+6-2x+7)
I=(4x-1)(-x+13)
I=(4x-1)(13-x)
J=4x
²
-49
type a²-b²=(a-b)(a+b)
J=(2x-7)(2x+7)
1 votes
Thanks 1
Juulien
Le i est correct
Juulien
Oui, la réponse a été modifiée, je l'indiquais seulement pour l'utilisateur qui a posé la question
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Lista de comentários
Verified answer
Bonjour,H = 5(2-7x) + 12(2-7x)
H = (2-7x)(5+12)
H = 17(2-7x)
I = (4x-1)(x+6)-(4x-1)(2x-7)
I = (4x-1)[(x+6)-(2x-7)]
I = (4x-1)(x+6-2x+7)
I = (4x-1)(-x+13)
J = 4x² - 49
On voit ça comme un a² - b² = (a+b)(a-b)
J = (2x+7)(2x-7)
Verified answer
Bonjour,H=5(2-7x)+12(2-7x)
H=(2-7x)(5+12)
H=17(2-7x)
I=(4x-1)(x+6)-(4x-1)(2x-7)
I=(4x-1)(x+6-2x+7)
I=(4x-1)(-x+13)
I=(4x-1)(13-x)
J=4x²-49
type a²-b²=(a-b)(a+b)
J=(2x-7)(2x+7)