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MacPfister

  • 3 years ago

If 2 + sqrt(3) is a polynomial root, name another root of the polynomial and explain how you know it must also be a root. (Explain in 1 or 2 sentences)

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  1. myininaya
    • 3 years ago
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    I guess they are defining this polynomial to have real coefficients even though they didn't say that. So when you solve \[ax^2+bx+c=0\] You get \[x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}\]. See of you can use that here. :)

  2. myininaya
    • 3 years ago
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    I'm also assuming that this polynomial has a quadratic factor. Such a weird question. Seems incomplete.

  3. MacPfister
    • 3 years ago
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    I need it in sentences.. :/ sorry

  4. MacPfister
    • 3 years ago
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    That doesn't answer the question either though, cause it's asking what would be another root if one of the polynomial roots is 2+ sqrt(3)

  5. myininaya
    • 3 years ago
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    Yes it does.

  6. myininaya
    • 3 years ago
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    That is 2 general solutions to a general quadratic above.

  7. myininaya
    • 3 years ago
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    A quadratic is a polynomial.

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