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Subject: Re: Factorisation x^4 + 4
Newsgroups: fr.sci.maths
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 <6462226e$0$3096$426a74cc@news.free.fr> <u3taqk$6il$1@cabale.usenet-fr.net>
From: kurtz le pirate <kurtzlepirate@free.fr>
Organization: Compagnie de la Banquise
Date: Fri, 19 May 2023 11:05:02 +0200
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On 15/05/2023 15:07, Olivier Miakinen wrote:
> Bonjour,
> 
> Le 15/05/2023 14:15, ast a écrit :
>>>
>>> On a: x^4 + 1 =  ((x+1)²+1)).((x-1)²-1)
>>
>> erreur
>>
>> x^4 + 1 =  ((x+1)²+1)).((x-1)²+1)
> 
> Corrigeons tout de suite la deuxième erreur, avec un 4 au lieu d'un 1 :
> 
> x⁴ + 4 = ((x+1)²+1)).((x-1)²+1)

mais si c'est x^4 + 4 ça donne :

	(x^2 - 2 x + 2) (x^2 + 2 x + 2)




-- 
kurtz le pirate
compagnie de la banquise