Let  be polynomials where K is a field. To determine whether two polynomials have a common factor without doing any divisions in K[x] can be seen from its resultant, that is determinant from Sylvester matrix. Two polynomials will have a common factor if and only if its resultant is zero. If its resultant isn’t zero so two polynomials have not a common factor. Wants to be look for resultant  where  in  where C is the set of all complex numbers. To make the easy resultant computations is used by maple 8.               Â
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