set ylabel "P-->"
set xlabel "Pd(P)-->"
set terminal png
set output "Ean.png"
set xr [0.0:1.0]
set yr [0.0:1.0]
set multiplot
plot (15*(x**2)*((1-x)**4)*0.466+20*(x**3)*((1-x)**3)*0.6+15*(x**4)*((1-x)**2)*0.533+6*(x**5)*((1-x)**1)*0.666+1*(x**6)*((1-x)**0)*1)
plot x

% Solve[15*(x^2)*((1-x)^4)*0.466+20*(x^3)*((1-x)^3)*0.6+15*(x^4)*((1-x)^2)*0.533+6*(x^5)*((1-x)^1)*0.666+1*(x^6)*((1-x)^0)*1 == x, x]
<mbot> flamingspinach: {{x -> -362.9558541501875}, {x -> 0.}, {x -> 0.29388375529581234}, {x -> 0.49880769255496027}, {x -> 1.0000000000000042}, {x -> 1.708617247795159}}