How to solve this quadratic equation?

Hello,

I need help how to solve this quadratic equation:

hσ /((1−βh)(1−h))* (1 + βδ2 ) = ( η + σ/( (1−βh)(1−h))* (1 + βh2 ) )* δ.

Thanks in advance

[Farah Shahpoor]

Iam using this code but it doensn't work

>> syms h sigma beta delta n
>> solve('h*sigma/((1-(beta*h)*(1-h)))*(1+(beta*(delta^2))== (n + (sigma /(1-(beta*h))*(1-h))*(1+(beta*(h^2))*delta',delta)
Error using solve>getEqns (line 418)
List of equations must not be empty.

Error in solve (line 226)
[eqns,vars,options] = getEqns(varargin{:});

[Torsten]

solve(h*sigma/((1-(beta*h)*(1-h)))*(1+(beta*(delta^2))== (n + (sigma /(1-(beta*h))*(1-h))*(1+(beta*(h^2))*delta,delta)

[Farah Shahpoor]

thx a lot ! It works now!!