Author 
Comment/Response 
Gandalf Saxe

12/11/12 11:08am
In: Factor[x^4 + 2 x^2 + 1]
Out: (1 + x^2)^2
This factorizes the polynomial alright, but not in the form P(x)=(xr1)^p2*(xr2)^p2*...*(xrk)^pk
with the r's being roots and p's respective algebraic multiplicities.
Is it possible to have Mathematica factor the polynomial x^4+2x^2+1 to (x+I)^2*((xI)^2)?
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