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The Fundamental Theorem of Algebra Is:

Every polynomial equation of degree n, n>0, with complex coefficients has at least one complex root.

This is often stated as

Every polynomial equation of degree n with complex coefficients has n roots in the complex numbers.

In fact, the two statements are equivalent.  The second can be proved by using the first form to know there is a root, and and then repeatedly dividing the polynomial by one of its roots until its degree becomes zero.

Internet references

Wikipedia: Fundamental theorem of algebra 

Mathworld: Fundamental Theorem of Algebra

Related pages in this website

Other so-called "fundamental" theorems

The Fundamental Theorem of Arithmetic says every number has exactly one unique prime factorization.

The Fundamental Theorem of Calculus says if f is the derivative of F, then the integral from a to b of f(x) dx is F(b)-F(a).


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