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Thread: indices problem

  1. October 11th 2010, 04:23 AM #1
    mastermin346
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    indices problem

    Solve the equation 27(9^{x+1}) = \frac{1}{81}
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  2. October 11th 2010, 04:27 AM #2
    emakarov
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    Step 1. Divide both sides by 27.

    Step 2. Express both sides as powers of 3. Note that (3^2)^a=3^{2a} and 3^{-a}=1/(3^a).

    Step 3. Equate the powers of 3 from the two sides.
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