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Mathematics 17 Online
OpenStudy (anonymous):

A complex number, will, in general, have ____ fifth roots. What is the blank?

jimthompson5910 (jim_thompson5910):

hint: look at the fundamental theorem of algebra

OpenStudy (anonymous):

Still not getting it? Can you please tell me the blank?

jimthompson5910 (jim_thompson5910):

what does the fundamental theorem of algebra say?

OpenStudy (anonymous):

"The fundamental theorem of algebra states that every non-constant single-variable polynomial with complex coefficients has at least one complex root. This includes polynomials with real coefficients, since every real number is a complex number with zero imaginary part."

jimthompson5910 (jim_thompson5910):

what else does the theorem say? basically I'm asking this: how many roots does a 2nd degree polynomial have? what about a 3rd degree polynomial? nth degree?

OpenStudy (anonymous):

I believe that the number of roots is equal to the number of the degree of a polynomial, right?

OpenStudy (anonymous):

So wold the answer be 5 fifth roots?

jimthompson5910 (jim_thompson5910):

you got it, the fundamental theorem of algebra also says that if f(x) is a polynomial of degree n, then it will have n complex roots

OpenStudy (anonymous):

*would

jimthompson5910 (jim_thompson5910):

correct, the answer for the blank is 5

OpenStudy (anonymous):

Alright! Gee, Thanks! ^.^

jimthompson5910 (jim_thompson5910):

you're welcome

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