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Math Help - solving for the solution question

  1. #1
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    solving for the solution question

    as i return from vacation i forgot how to do this and i kinda lost my notes


    "Solve for the solution of:"


     <br />
y=x^2, <br />
y=8-x^2<br />

    please show me step by step
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  2. #2
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    e^(i*pi)'s Avatar
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    Quote Originally Posted by behindDkeys View Post
    as i return from vacation i forgot how to do this and i kinda lost my notes


    "Solve for the solution of:"


     <br />
y=x^2, <br />
y=8-x^2<br />

    please show me step by step
    Set them equal and solve for x

    x^2 = 8-x^2 which cancels down to x^2-4 = 0

    Solve using the difference of two squares
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  3. #3
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    Quote Originally Posted by e^(i*pi) View Post
    Set them equal and solve for x

    x^2 = 8-x^2 which cancels down to x^2-4 = 0

    Solve using the difference of two squares

    oh yea and im gonna have answer of -2 and positive 2 now i remember



    thanks
    Last edited by behindDkeys; May 16th 2010 at 11:03 AM. Reason: wrong numbers XD
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