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#1 2009-08-24 14:14:16

MathsIsFun
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Difference of Two Cubes

A (rather too short) page on the Difference of Two Cubes


"The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  - Leon M. Lederman
 

#2 2009-08-24 20:13:48

bobbym
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Re: Difference of Two Cubes

Hi MathsisFun;



It does some nifty expansions like:



calling a= 5x and b =2



So numbers like 15617 which equal 25^3 - 2^3 can be factored  but not always into primes.

15617 = (23)(679)


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.
 

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