[CAES] (x^4-4*x^3+2*x^2+4*x+4) Exact factorization of Quartic Polynomial

[parisse]

If you want to compare with wolfram, you should not use a calc.
Embedded square roots is not the best way to represent exactly roots of polynomials. One way to factor your polynomial with Xcas is

Code:


p:=x^4-4*x^3+2*x^2+4*x+4;
rootof(p):='j';
evalf(j);
factor(p,j);

This gives more information on the structures of the exact roots.