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1*x^4+1*x^3+1*x^2+1*x+0 = 0
3*x^4+2*x^3+1*x^2+0*x+0 = 0
1*x^3+2*x^2+3*x+0*x^4+0 = 0
3/((2*x+7)^10)
3*x = log(1/7)(1)
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