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Math Help - Circle, Hyperble?

  1. #1
    Newbie
    Joined
    Nov 2009
    Posts
    8

    Circle, Hyperble?

    express the equation 5x^2 + 38x - 8xy - 22y - y^2 + 47 = 0

    in the form AX^2 + BY^2 = 1?

    No clue how to even aproach, cheers all.

    Rodregez
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  2. #2
    MHF Contributor
    Joined
    Apr 2008
    Posts
    1,092
    You can't put this equation in that form. You can't even put it in the form A(x + C)^2 + B(y + D)^2 = 1.
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