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Math Help - boolean algebra

  1. #1
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    boolean algebra

    Please help to simplify

    xy'x' + xyx'

    xy + xy' +x'y

    x + yz + x'y + y'xz
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  2. #2
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    Quote Originally Posted by cj's mom View Post
    Please help to simplify

    xy'x' + xyx'

    xy + xy' +x'y

    x + yz + x'y + y'xz
    (i) Isnt xx' = 0?
    (ii) xy + xy' +x'y = x(y+y') + x'y = x + x'y = x + y
    (iii) x + yz + x'y + y'xz = x + x'y + z(y + y'x) = x + y + z(y + x) = (y+x)(1 + z) = y + x
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