Several possibilities here:
If you take your result (185... ... 104), you can just apply rectform(...)
to it to get the real value.
If you are only interested in real numerical solutions of polynomials where
all the coefficients are numbers, you can use realroots (and then probably
float if you want a floating-point number rather than a rational
approximation).
-s
On Tue, Jul 30, 2013 at 4:14 PM, Gunter K?nigsmann <gunter at peterpall.de>wrote:
> (1858697.723324983*%i
> +1516536.685031037)^(1/3)+17920.05777118602/(1858697.723324983*%i
> +1516536.685031037)^(1/3)+129.4794801195104;
>