How can i separate real and imaginary part of a function

i wanna separate imaginary part and real part of this function

it is actually quantile pareto distribution

x=e - (a*(exp(-pi*k*l*2i)*(1 - F_quantile)^k - 1))/k
real(x)

and this is happening when i use simplify or just real function

ans =
 
real(e) - real((a*(exp(-pi*k*l*2i)*(1 - F_quantile)^k - 1))/k)
 

the answer for quantile pareto distribution is correct but with out " (exp(-pi*k*l*2i) " this part. i wanna separate real part for the final answer

also i tried to turn F(x) to x(F) and the matlab give me the answer with imaginary part as well.

the cumulative distribution that i tried to find the quantile is:(F(x) to x(F))

F=1 - ((k*(e - x))/a + 1)^(1/k)

[dpb]

If have the Statistics Toolbox, use gpcdf, gpinv