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Math Help - Graphing and Solving Quadratic Equations

  1. #1
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    Exclamation Graphing and Solving Quadratic Equations

    I have a test in algebra 2 tomorrow and i just got back from thanksgiving break abd forgot how to do these.
    here is the problem:

    x^2= 6x - 8

    I need to graph and find the exact roots.

    PLEASE HELP!!
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  2. #2
    MHF Contributor MarkFL's Avatar
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    Re: Graphing and Solving Quadratic Equations

    To find the roots, I would right the equation in standard form:

    x^2-6x+8=0

    Now, to factor, you need two factors of 8 whose sum is -6...

    To sketch the graph, I would write the quadratic in vertex form y=(x-h)^2+k by completing the square.

    Can you now finish?
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