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Math Help - another quadratic equation

  1. #1
    Junior Member
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    another quadratic equation

    equation: x^2-6x+1=5

    Complete the square

    x^2-6x=4
    then i took have of 6 which is 3 and squared it to come up with 9

    this is what I have now:

    x^2-6x+9=4+9

    final answer (x-3)^2=13

    I don't know if this is correct but I hope so because I have 70 more to do.
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  2. #2
    Eater of Worlds
    galactus's Avatar
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    Here's the general formula for completing the square. You can skip all those in between steps.

    a(x-\frac{b}{2a})^{2}+\underbrace{c-\frac{b^{2}}{4a}}_{\text{constant}}

    Yes, the one you posted is correct.
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