plot {6*x^5 - 15*x^4 + 10*x^3, 6*(6*x^5 - 15*x^4 + 10*x^3)^5 - 15*(6*x^5 - 15*x^4 + 10*x^3)^4 + 10*(6*x^5 - 15*x^4 + 10*x^3)^3}, x=0..1