x^4+(10^-5+.1*2.1/(1+2.1))*x^3-(10^-5*((.1-.1*2.1)/(1+2.1)-10^-9)+10^-14)*x^2-10^-14*((2*.1-.1*2.1)/(1+2.1)+10^-14/10^-9)*x-10^-28=0

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