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Math Help - simultaneous equations

  1. #1
    Junior Member
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    simultaneous equations

    I have following equations

    sqrt(x) + y = 7;<br />
           sqrt(y) + x = 11

    Whenever I try to solve these for x and y in the set of N......it leads me to quartic equations...

    Please Help...

    Thanks in advance.
    Last edited by Arka; April 12th 2011 at 07:36 AM.
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  2. #2
    Senior Member Sambit's Avatar
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    If the set N is used only, there is a much simpler way. By seeing these equations we can say x should be less than 11 and should be perfect square hence it is 9.
    By putting this value y= 4
    Last edited by Sambit; April 12th 2011 at 07:49 AM. Reason: EDIT: silly mistake
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  3. #3
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    Quote Originally Posted by Sambit View Post
    If the set N is used only, there is a much simpler way. By seeing these equations we can say x should be less than 11 and should be perfect square hence it is 9 (or 4).
    By putting this value y= 4 (or 9)
    But what if I want to solve it in the set C ?
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