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[1/X]^12-[1/X]^11+[1/X]^10-[1/X]^9-[1/X]^8-[1/X]^5-[1/X]^4+[1/X]^3-[1/X]^2+1=0
[1/X]^12-[1/X]^11+[1/X]^10-[1/X]^9-[1/X]^8-[1/X]^5-[1/X]^4+[1/X]^3-[1/X]^2+1=0
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