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Math Help - General--> standard form

  1. #1
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    General--> standard form

    Okay maybe im thinking too hard but im having a terrible time completing the square of this quadratic and finding standard form...


    -1.5x^2+255x+0
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  2. #2
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    Quote Originally Posted by nikkaloo View Post
    Okay maybe im thinking too hard but im having a terrible time completing the square of this quadratic ...

    -1.5x^2+255x+0
    Hello,

    I can help you with completing the square:

    -1.5x^2+255x+0=-1.5(x^2-170x)= -1.5\left(x^2-170x+\left(\frac{170}{2}\right)^2-85^2\right)  =-1.5((x-85)^2-85^2) = -1.5(x-85)^2+1.5 \cdot 85^2 = -1.5(x-85)^2+10837.5
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  3. #3
    is up to his old tricks again! Jhevon's Avatar
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    the form the quadratic is in after completing the square is the standard form. namely, the form:

    y = a(x - h)^2 + k

    which is the form earboth's answer is in
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