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Fundamental Theorem of Algebra

For every a₀ in C, ..., a_n-1 in C, there exists an x in C such that

a₀*x⁰ + ...+ a_n-1*x^n-1 = 0.

• C is complete with respect to + and *.
  • Every equation with + and * has a solution in C.

No further extension required.