solving quartic eqn returns root

When I solve a quartic equation using solve by following the following steps

syms H Bo

eqn=H^4 + Bo/15*H^3 + 24/15*H + 4/15*Bo==0;

solx=solve(eqn,H)

I get no explicit functional expression for H in terms of Bo but the following result:

solx =

root(z^4 + (Bo*z^3)/15 + (8*z)/5 + (4*Bo)/15, z, 1)

root(z^4 + (Bo*z^3)/15 + (8*z)/5 + (4*Bo)/15, z, 2)

root(z^4 + (Bo*z^3)/15 + (8*z)/5 + (4*Bo)/15, z, 3)

root(z^4 + (Bo*z^3)/15 + (8*z)/5 + (4*Bo)/15, z, 4)

How do I get solve the above quartic equation and get an explicit expression for H in terms of Bo?

Answer 1

[madhan ravi]

solx = vpa(solve(eqn,H,'Maxdegree',4))