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Math Help - Little big of algebra help

  1. #1
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    Little big of algebra help

    Simplify the following and collect the like terms:
    5(x - 8) - 8(3x - 4)(6x + 8)

    I know i have to do the foil thing for the last part but what do I do with the -8?

    Cause from the first part you get:

    5x - 40

    Then I know I have to do the 3x * 6x then 3x * 8 then -4 * 6x and then -4 * 8.

    Am I doing it wrong. Well I know I am but where does the -8 come into play.
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  2. #2
    MHF Contributor
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    Re: Little big of algebra help

    Hey SpennyG.

    The -8 comes into play by figuring out -8 * (3x*6x + 3x*8 - 4*6x - 4*8) which gives the answer to the second part.

    You then add the first part to the second one to get your answer.
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  3. #3
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    Re: Little big of algebra help

    Thank you!
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