if x+1/x = 3^1/2 then x^3 - 1/x^3 = ??

thanks :)

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- January 30th 2011, 11:09 AMdisharmonieneed help in exponent problem
if x+1/x = 3^1/2 then x^3 - 1/x^3 = ??

thanks :) - January 30th 2011, 11:40 AMrtblue

note that 3^(1/2)=sqrt(3).

Surely, you can take it from here. - January 30th 2011, 11:43 AMmr fantastic
- January 30th 2011, 06:59 PMSoroban
Hello, disharmonie!

I got a rather silly answer . . . or is it silly?

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