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Math Help - [SOLVED] indices equation

  1. #1
    Newbie
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    Feb 2009
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    Exclamation [SOLVED] indices equation

    hi,

    can someone please help me simplify this eqn?

    (2^n+2)+12

    5 x 2^n +5

    thankyou
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  2. #2
    Super Member

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    Lexington, MA (USA)
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    Hello, xch3m_is_l0v3x!

    Is there a typo?
    I'll take a guess at what it should be . . .


    \frac{2^{n+2}+12}{5\!\cdot\!2^n +{\color{red}15}}

    We have: . \frac{2^{n+2} + 2^2\!\cdot\!3}{5\!\cdot\!2^n + 15}

    Factor: . \frac{2^2(2^n + 3)}{5(2^n + 3)}

    Reduce: . \frac{2^2}{5} \;=\;\frac{4}{5}

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