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From: Olivier Miakinen <om+news@miakinen.net>
Newsgroups: fr.sci.maths
Subject: Re: Factorisation x^4 + 4
Date: Fri, 19 May 2023 15:20:10 +0200
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Le 19/05/2023 11:05, kurtz le pirate a écrit :
>> 
>> 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)

Sachant que (x+1)² = (x² + 2x + 1) et (x-1)² = (x² - 2x + 1), c'est
cohérent.

:-)

-- 
Olivier Miakinen