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Math Help - Multiply out to find the sum of products?

  1. #1
    Member nautica17's Avatar
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    Aug 2009
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    Multiply out to find the sum of products?

    Hey everyone. I don't know where to put this question so I'll put it here. It's for my logic design class.

    Multiply out to find the sum of products. I can't quite figure out how to get the answer even though I know what it is.

    (W+X'+Z')(W'+Y')(W'+X+Z')(W+X')(W+Y+Z)

    The answer should come out to this, but how do you get this:
    WY'X+WY'Z'+W'X'Y+W'X'Y'+W'X'Z



    Any help, please?
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  2. #2
    Super Member
    Joined
    Jan 2009
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    Quote Originally Posted by nautica17 View Post
    Hey everyone. I don't know where to put this question so I'll put it here. It's for my logic design class.

    Multiply out to find the sum of products. I can't quite figure out how to get the answer even though I know what it is.

    (W+X'+Z')(W'+Y')(W'+X+Z')(W+X')(W+Y+Z)

    The answer should come out to this, but how do you get this:
    WY'X+WY'Z'+W'X'Y+W'X'Y'+W'X'Z



    Any help, please?
    If you decide to do: A & B
    and decide to do: A & C
    and decide to do: A & D
    you only do A once.

    e.g.:
    cut Tree1 down & go shopping
    cut Tree1 down & go boating
    cut Tree1 down & sell the house

    You don't cut the tree down three times.

    .
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