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2.31.14  Factorization over ℤ/pℤ[x] : factor factoriser

factor takes as argument a polynomial with coefficients in ℤ/pℤ[x].
factor factorizes this polynomial in ℤ/pℤ[x] (p must be prime).
Input :

factor((-3*x^3+5*x^2-5*x+4)%13)

Output :

((1%13)*x+-6%13)*((-3%13)*x^2+-5%13)

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