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Evaluate ( 2/3 )^(-3) · ( 3/4 )^(-3)

Evaluate.
( 2/3 )^(-3) · ( 3/4 )^(-3)




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What is the capital of Egypt? ( Cairo )

1 Answer

  1. To evaluate ((frac{2}{3})^{-3} cdot (frac{3}{4})^{-3}), we will first simplify each term separately using the property of negative exponents, which states that (a^{-n} = frac{1}{a^n}).

    1. Calculate ((frac{2}{3})^{-3}):

    [

    (frac{2}{3})^{-3} = frac{1}{(frac{2}{3})^3} = frac{1}{frac{2^3}{3^3}} = frac{3^3}{2^3} = frac{27}{8}

    ]

    2. Calculate ((frac{3}{4})^{-3}):

    [

    (frac{3}{4})^{-3} = frac{1}{(frac{3}{4})^3} = frac{1}{frac{3^3}{4^3}} = frac{4^3}{3^3} = frac{64}{27}

    ]

    3. Now, combine the results:

    [

    frac{27}{8} cdot frac{64}{27}

    ]

    Here, the (27) in the numerator and denominator cancel out:

    [

    = frac{64}{8}

    ]

    4. Finally

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