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Thread: HELP !! on Indices and Logarithms

  1. October 14th 2007, 06:59 AM #1
    timc
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    HELP !! on Indices and Logarithms

    Sorry Posted In The Worng Section Delete Please
    Last edited by timc; October 14th 2007 at 07:07 AM. Reason: WRONG SECTION
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  2. October 14th 2007, 07:10 AM #2
    Soroban
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    Hello, Tim!

    I assume those are exponents (indices) . . .

    Q1. Manipulate the following expressions and simplify them using the laws of indices.

    a)\;\;x^2y^{-5}\:=\:x^4y^3
    Since we're given an equation, I'm not sure what "simplify" means . . .

    We have: . x^2y^{-5} \;=\;x^4y^3

    Divide both sides by x^2\!:\;\;y^{-5} \;=\;x^2y^3

    Multiply both sides by y^5\!:\;\;1 \;=\;x^2y^8

    So we have: . x^2y^8 \;=\;1

    . . I suppose that's "simplified" . . .
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