Displaying unreal numbers in system of equations

I have this system of equations that I'm trying to run, but I don't know what to do to display the imaginary numbers in the solution. This is what I have so far:

syms K

eqn = K == (981 - 250*(K + (3^(1/2)*5^(1/2)*(400*K^2 + 981)^(1/2))/50)^2)^(1/2)/20;

sol = vpasolve(eqn,K);

disp('K=')

disp(sol)

Any help is greatly appreciated.

Answer 1

[Chetan Bhavsar]

syms K
eqn =(981 - 250*(K + (3^(1/2)*5^(1/2)*(400*K^2 + 981)^(1/2))/50)^2)^(1/2)/20;
sol = vpasolve(eqn,K);
sol1 = vpasolve(K==eqn,K);
disp(sol)
disp(sol1)