DeadShot
  • DeadShot
help? Find the polynomial function with roots 11 and 2i.
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
since complex roots come in conjugate pairs, the polynomial has to also have -2i as one of the roots... so the polynomial having 11, 2i, -2i as roots has to be at least a third degree polynomial
DeadShot
  • DeadShot
so, it would be (x - 11) (x - 2i) (x - (-2i)) ?
DeadShot
  • DeadShot
\[(x^3 -11x^2 -2ix^2 +2ix^2 + 22i -22i -4i^2)\] that's the unsimplified answer, so the simplified one is \[(x^3 - 11x^2 -4i^2)\] right?

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