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Math Help - Completing the Square

  1. #1
    Bunny
    Guest

    blah blah blah = 0

    check attachment. Need help with this ASAP. Can e-mail solution to bunaboo@hotmail.com Thanks.
    Attached Files Attached Files
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  2. #2
    MHF Contributor
    Joined
    Apr 2005
    Posts
    1,631
    What will you do with A after that?

    Nothing.
    And you so you cannot continue with your purpose.

    In "completing the square", make sure first that the coefficient of the x^2 is unity or 1.

    You have Ax^2.
    You need to make that into x^2 only, before you continue.
    So you divide Ax^2 by A,
    Ax^2 / A = x^2 ----now you can continue.

    Ax^2 +Bx +C^2 = 0
    Divide both sides by A,
    x^2 +(B/A)x +(C^2)/A = 0
    Then go ahead with your com[leting the square.

    Let me continue it.
    x ^2 +(B/A)x = -(C^2)/A
    x^2 +(B/A)x +[(B/A)/2]^2 = -(C^2)/A +[(B/A)/2]^2
    x^2 +(B/A)x +(B/2A)^2 = -(C^2)/A +(B/2A)^2
    Factor the Left side,
    (x +B/2A)^2 = -(C^2)/A +(B/2A)^2
    That is it.
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