function handles don't resolve the expression per say, for example -
a = 1.3;
b = .2;
c = 30;
parabola = @(x) a*x.^2 + b*x + c
This is not displayed as
par = @(x) 1.3*x.^2 + 0.2*x + 30
Your closest option I think is syms
syms f(x) g(x)
f(x)=x^2+x;
g(x)=3*x^2+5*x;
%symbolic function
z(x)=f(x)+g(x)
%Converting the symbolic function into function handle
z=matlabFunction(z)
