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    Hmm... I'm not conversant with LaTex..
    can you have a look at this problem?

    I know that A^2 + B^2 = 4..
    but how do i go from here? or a different approach?

    Thx in advance!
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    I'm not saying this is the best approach, or even if it works, but if you actually calculate (A+iB)^2, you should find a lot of stuff cancels.
    Then try squaring again to get (A+iB)^4, and then twice more to get (A+iB)^8 and (A+iB)^16. Then cube the last result.
 
 
 
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Updated: October 20, 2008

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