inverse

(x^3)+2*x-1 i want its inverse

\(x^{3}+2x-1=0\)

\({\color{Black}With \ Online-calculator:}\)

\( The \ Equation \ has \ a \ real \ and \ two \ complex \ solutions.\)

\({\color{blue}x1=0.453397651516}\)

\({\color{blue}x2=-0.2266988+1.4677115 i}\)

\({\color{blue}x3=-0.2266988-1.4677115 i}\)   !