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Write out a derivation of the quadratic formula.
You can check almost any high school
algebra book.
Find any replacements for x,
y, and z such that xn
+ yn = zn,
where n is greater than 2 and where x, y,
and z are counting numbers. Write a
history of this problem, known as Fermat's Last Theorem.References: A source I recommend highly is the movie The Proof
one of PBS's shows on the NOVA series. The web page
for this move is:
http://www.pbs.org/wgbh/nova/proof/
Another general overview is at this site:
http://www-history.mcs.st-and.ac.uk/history/HistTopics/Fermat's_last_theorem.html
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