Hello

Robert Jerrard a écrit :

>On Thu, 2005-03-11 at 16:57 +0100, Troumad wrote:
>  
>
>>I'm french and I don't speak english, but i try...
>>I will like to be able to factorize fractions like x²-2, but that does 
>>not go because the root is not whole, it's sqrt(2). It's good with x²-4 
>>because the root is 2 !
>>    
>>
>
>Hi Troumad, perhaps some others can offer further information but I believe that factor is specifically working in the integers. The command describe(factor); shows that it is "over the field of integers" so you will not get it to show (x-sqrt(2))*(x+sqrt(2)). On the other hand you could do solve(x^2-2) which will give you plus and minus sqrt(2) as roots of the polynomial. 
>
>Hope this helps, Bob.
>  
>
Yes... But I seek another method to factorize directly.  I have the same
problem with the rational fractions.
Lukic Milan has to give a good method, but it's not simple!

I seek a simple software GPL to advise with my students to solve the
problems that one gives them.

-- 
Amicalement vOOotre              Troumad Alias Bernard SIAUD
mon site : http://troumad.free.fr : AD&D maths WEB sectes
Pour la liberté http://lea-linux.org http://www.eurolinux.org/index.fr.html
N'envoyez que des documents avec des formats ouverts, comme
http://fr.openoffice.org