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Math Help - simultaneous quadratic equations

  1. #1
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    simultaneous quadratic equations

    Hi;
    I need to move on with simutaneous equations and need practice solving them
    for quadratics anyone know where I can get practice questions on the web.

    or if someone could give me some examples with answers so I can try to work them out that would be great.

    Thanks.
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  2. #2
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    Re: simultaneous quadratic equations

    hi anthonye

    here's something you can start with:http://www.mathshelper.co.uk/workshe...0Worksheet.pdf
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  3. #3
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    Re: simultaneous quadratic equations

    Great just what I needed but I could do with more quadratics in both equations.
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  4. #4
    Member anonimnystefy's Avatar
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    Re: simultaneous quadratic equations

    hi anthonye

    here's some more stuff:Linear-Quadratic Systems Worksheets

    EDIT:sorry,didn't know you have to be a member.
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  5. #5
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    Re: simultaneous quadratic equations

    Quote Originally Posted by anthonye View Post
    Hi;
    I need to move on with simutaneous equations and need practice solving them
    for quadratics anyone know where I can get practice questions on the web.

    or if someone could give me some examples with answers so I can try to work them out that would be great.

    Thanks.
    Most quadratics will be of the form \displaystyle y = a_1x^2 + b_1x + c_1 and \displaystyle y = a_2x^2 + b_2x + c_2. Since they are both equal to \displaystyle y, they are equal to each other, which means

    \displaystyle \begin{align*} a_1x^2 + b_1x + c_1 &= a_2x^2 + b_2x + c_2 \\ (a_1 - a_2)x^2 + (b_1 - b_2)x + c_1 - c_2 &= 0 \end{align*}

    another quadratic, which you can solve using the methods you already know
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