Show that α=³√(7+5√2)+³√(7-5√2) is an integer. No calculators or computers allowed!

(In reply to Answer + Solution by nikki)

That was quite the derivation nikki!

I was a little sad to see it come out to the root of a cubic because then it took trial and error.  (Was hoping for pure algebra.)

Not your fault.

-Jer

ps. How come your formatting came out right?

Posted by Jer on 2004-10-13 16:13:16