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    Lilempire's Avatar
    Lilempire Posts: 1, Reputation: 1
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    #1

    Feb 27, 2007, 12:31 PM
    Nonlinear Systems
    Solve the given Nonlinear System (confused how)

    y=4x-x^2+8
    y=x^2-2x

    I'm not sure what to do, my substitution is not giving me the correct answer. I need help bad.
    asterisk_man's Avatar
    asterisk_man Posts: 476, Reputation: 32
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    #2

    Feb 27, 2007, 12:51 PM
    they give you two equations for y, replace the y in one with the right hand side of the other.
    for example:
    x^2-2x=4x-x^2+8

    now just solve for x
    put your answer(s) into one of the two equations to get the associated y value(s).

    Let me know if you have any other questions.
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