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Math Help - not sure the approach to use

  1. #1
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    Cool not sure the approach to use

    factorise 9x^2 - 4
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  2. #2
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    Re: not sure the approach to use

    Quote Originally Posted by richardwedderburn View Post
    factorise 9x^2 - 4
    (3x-2)(3x+2)

    post algebra problems in the algebra forum, please ... not in the lobby.
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  3. #3
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    Re: not sure the approach to use

    thank you I am new to the forum.
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