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Math Help - please very urgent

  1. #1
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    please very urgent

    what quadratic function will be utilized to solve the quadratic equation:
    3x^3-2x+1=x+5

    a>y=3x^3-3x-4
    b>y=-3x-4
    c>0=3x^2-3x-4
    d>4x^2-3x-4
    e>none
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  2. #2
    Grand Panjandrum
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    Quote Originally Posted by bobby77
    what quadratic function will be utilized to solve the quadratic equation:
    3x^3-2x+1=x+5

    a>y=3x^3-3x-4
    b>y=-3x-4
    c>0=3x^2-3x-4
    d>4x^2-3x-4
    e>none
    What quadratic(? its a cubic - but never mind) equation will be used to
    solve:

    <br />
3x^3-2x+1=x+5<br />

    If we bring everything over to the same side of the equation we have:

    <br />
3x^3-3x-4=0<br />
.

    So the required function is:

    <br />
y=3x^3-3x-4<br />
.

    RonL
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