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Math Help - Finding a polynomial function

  1. #1
    Member integral's Avatar
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    Finding a polynomial function

    "write a polynomisl function of least degree that has real coefficients, the givern zeros, and a leading coefficient of 1."

    9. (2,-1,5)

    I have tried using three- y=ax^2=bx+c to solve it... in vain
    Last edited by mr fantastic; February 8th 2010 at 02:06 AM. Reason: Changed post title
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  2. #2
    A riddle wrapped in an enigma
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    Quote Originally Posted by integral View Post
    "write a polynomisl function of least degree that has real coefficients, the givern zeros, and a leading coefficient of 1."

    9. (2,-1,5)

    I have tried using three- y=ax^2=bx+c to solve it... in vain
    Hi integral,

    If 2, -1, and 5 are zeros, then (x - 2), (x + 1), and (x - 5) are factors of the polynomial.

    Therefore f(x) = (x - 2)(x + 1)(x - 5).
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