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Geometry of Complex Roots

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To graph the roots of a polynomial, first you must find one root. You only need one! Plot this root on the graph, draw a circle around the origin touching the root (now a point on your circle), and figure out how many degrees apart each root is using this formula:   \frac{2\pi}{n} . 

The roots will be evenly spaced along the edge of this circle!

Remember: The number of roots is the power of the polynomial!


  1. What is the spacing in polar coordinates between the roots of the polynomial x^6 = 12 ?
  2. How many roots does x^{10}=1 have?
  3. Calculate the roots of x^{10}=1 and represent them graphically.
  4. How many roots does x^4=16 have?
  5. Calculate the roots of x^4=16 and represent them graphically.
  6. Describe how to represent the roots of x^6=1 graphically without first solving the equation.

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