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Math Help - A not so simple single variable problem..?

  1. #1
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    Question A not so simple single variable problem..?

    It's been a while since I've done algebra (grad in neuro) so perhaps I'm missing something very basic but I was wondering if anyone can find the steps to solving this equation:

    (2)2^2^x-22+12^x=0

    Much Appreciated!

    PS. the solution is x=~1.04 .. but I'm more interested in the steps to get there!
    I've been able to expand 12^x --> 3^x2^2^x but not much further.. according to the problem only exponent laws should be used to get to the solution..
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  2. #2
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    Are you sure this isn't

    \displaystyle 2\cdot 2^{2x} - 22 + 2^x or \displaystyle 2\cdot 12^{2x} - 22 + 12^x.


    If it was either of those, it would be a quadratic equation.
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