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Continue to ChatCalculation of the minimal polynomial of 2cos(pi/n) over Q with Maple, Numerical Analysis and Applied Mathematics, - https://avesis.uludag.edu.tr/publication/details/bc761146-35a4-497b-9270-5959a46f5d71/calculation-of-the-minimal-polynomial-of-2cospi-n-over-q-with-maple-numerical-analysis-and-applied-mathematics