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Math Help - Calculus Limits Help

  1. #1
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    Calculus Limits Help

    How does (2+h)^3 -2(2+h)+1 become
    (8+12h+6h^2+h^3)-2(2+h)-1

    please help!
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  2. #2
    MHF Contributor red_dog's Avatar
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    (a+b)^3=a^3+3a^2b+3ab^2+b^3
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  3. #3
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    thaaank uu
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