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Math Help - solving systems of equations with conics. in elimination

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    solving systems of equations with conics. in elimination

    x^2-y^2=8
    y=x-4
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    Quote Originally Posted by jimC View Post
    x^2-y^2=8
    y=x-4
    Since you want elimination, we have that
    (x + y)(x - y) = 8

    So from the other equation
    x - y = 4
    and
    x + y = 2x - 4

    Putting these in we get
    (2x - 4) * (4) = 8

    -Dan
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