(1/2)*x^3-4*(1)*x^2+(1/2)*(1)^2*x,(1/2)*x^3-4*(2)*x^2+(1/2)*(2)^2*x,(1/2)*x^3-4*(3)*x^2+(1/2)*(3)^2*x,(1/2)*x^3-4*(4)*x^2+(1/2)*(4)^2*x

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