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Nabilchihabi200
@Nabilchihabi200
April 2019
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Bonjour
j'ai ce dm de math pour la rentree et je comprend pas cette question :
f(x)=x^2+4x+3
f(x)=(x+2)^2-1
en deduire une factorisation de f(x)
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Verified answer
Bonjour,
f(x) = (x+2)²-1 = (x+2)²-1²= a²-b² qu'on factorise (a-b)(a+b)
factorisation :
(x+2-1)(x+2+1) =
(x+1)(x+3)
1 votes
Thanks 1
nabilchihabi200
merci beaucoup
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Bonjour x^2+4x+3=3 merci de votre aide
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Bonjour f(x)=x^2+4x+3 resoudre l'equation f(x)=3
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Bonjour s'il vous plait c'est la troisieme fois que je pose cette question :f(x)=x^2+4x+3 demontrer que f(x)=(x+2)^2-1
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Verified answer
Bonjour,f(x) = (x+2)²-1 = (x+2)²-1²= a²-b² qu'on factorise (a-b)(a+b)
factorisation :
(x+2-1)(x+2+1) =
(x+1)(x+3)