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Math Help - I'm in Pre-Calc but have forgotten some Basic Algebra. Help?

  1. #1
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    I'm in Pre-Calc but have forgotten some Basic Algebra. Help?

    So I am currently in Pre-Calc and we first have to do a review of Algebra I, which I forgot most of. This assignment is effort only so I could easily just write garbage and get an A but I want to remember this. Could you just explain how I'd do a problem, not solve it for me.


    Links to problems (got an error when trying to insert picture)
    1. http://i.imgur.com/uEyR5Xr.jpg
    2. http://i.imgur.com/FUUQ6SY.jpg
    3. http://i.imgur.com/0O0XF5H.jpg
    4. http://i.imgur.com/xXcinfc.jpg

    Thanks in advance
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  2. #2
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    Re: I'm in Pre-Calc but have forgotten some Basic Algebra. Help?

    Rules of exponents:
    a^ma^n= a^{m+n}
    (a^m)^n= a^{mn}
    \frac{1}{a^n}= a^{-n}
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  3. #3
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    Re: I'm in Pre-Calc but have forgotten some Basic Algebra. Help?

    I'm in Pre-Calc but have forgotten some Basic Algebra. Help?-15-aug-13-2.png
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  4. #4
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    Re: I'm in Pre-Calc but have forgotten some Basic Algebra. Help?

    I'm in Pre-Calc but have forgotten some Basic Algebra. Help?-15-aug-13-3.png
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