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Thread: cube roots

  1. October 16th 2010, 08:41 PM #1
    rebel15851
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    cube roots

    Okay I desperately need help with this one:

    cube root of 72*t^8 power.

    Sorry, new to the forum and not sure how to write it out using math signs.
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  2. October 16th 2010, 10:09 PM #2
    mr fantastic
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    Quote Originally Posted by rebel15851 View Post
    Okay I desperately need help with this one:

    cube root of 72*t^8 power.

    Sorry, new to the forum and not sure how to write it out using math signs.
    Use the usual index laws to simplify \displaystyle \left( 72 t^8\right)^{1/3}. Note that 72 = 8x9 = 2^3 x 9.
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