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1*x^4+4*x^3-(9*x^2)-(16*x)+20 = 0
12;4;1;3;0;0
1*x^4+1*x^3-(7*x^2)-(1*x)+6 = 0
1*x^4+4*x^3-(9*x^2)-(16*x)+20 = 0
1/4 = x/84
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