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babydoll332

  • 2 years ago

Write a polynomial function of minimum degree with real coefficients whose zeros include those listed. Write the polynomial in standard form. 7, -11, and 2 + 8i

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  1. babydoll332
    • 2 years ago
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    f(x) = x4 - 9x3 + 56x2 - 290x + 5236

  2. Outkast3r09
    • 2 years ago
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    are you asking me to check this?

  3. babydoll332
    • 2 years ago
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    yes:)

  4. Outkast3r09
    • 2 years ago
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    |dw:1349656420770:dw|

  5. Outkast3r09
    • 2 years ago
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    |dw:1349656681165:dw|

  6. Outkast3r09
    • 2 years ago
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    is this what you multiplied together?

  7. babydoll332
    • 2 years ago
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    yes

  8. Outkast3r09
    • 2 years ago
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    then i'd assume you got the right answer let me use wolfram

  9. babydoll332
    • 2 years ago
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    f(x) = x4 - 25x2 + 580x - 5236

  10. babydoll332
    • 2 years ago
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    thanks sooo much :)

  11. Outkast3r09
    • 2 years ago
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    http://www.wolframalpha.com/input/?i=%28x-7%29%28x%2B11%29%28x-%282%2B8i%29%29%28x-%282-8i%29%29

  12. Outkast3r09
    • 2 years ago
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    look at alternate forms =P

  13. Outkast3r09
    • 2 years ago
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    it's correct

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