x^4+16x^3-2x^2-108x+1=0
x1=-15.688425122647156182278676855853396523724886520611...
x2=-2.7892720412798497774281493199838539485543139335140...
x3=0.00925778971550103128261012301626994525538800954034...
x4=2.4684393742115049284242160528209805270238124445853...
反过来构造一下就好了
(x-1)(x-2)(x-3)(x-4)=0
乘开来不就行了吗？？
X^4=1，则X^2=1或-1，X^2=1，X=1，-1，X^2=-1，X=i或-i
(x-1)(x-2)(x-3)(x-4)=0
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