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Math Help - Finding the roots?

  1. #1
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    Finding the roots?

    if r and s are roots of the equation 3x^2 - 7x +1 =0 compute r^3 s + rs^3.

    How do i know which is r and which is s?
    thanks!!!
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  2. #2
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    Re: Finding the roots?

    Quote Originally Posted by mmathh View Post
    find the roots of 3x^2 - 7x +1 =0
    thanks!!!
    use the quadratic formula
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  3. #3
    Junior Member RaisinBread's Avatar
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    Re: Finding the roots?

    Quote Originally Posted by mmathh View Post
    How do i know which is r and which is s?
    Notice that in the equation you gave, r^3s+rs^3, it doesn't matter which of the two roots you assign to s or r, the answer you will get at the end will be the same, so you can set r and s however you want to.
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  4. #4
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    Re: Finding the roots?

    heh heh yeah i totally noticed that right after i posted it...thanks! i feel dumb. hehe
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