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JEE Math Practice Question

If $$z$$ is a complex number, then the number of common roots of the equations $$z^{1985}+z^{100}+1=0$$ and $$z^3+2 z^2+2 z+1=0$$, is equal to

  1. A.0
  2. B.2
  3. C.1
  4. D.3

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