$\begin{array}{l}{i}^2\\ \mathrm{>>>}-1\end{array}$

$\begin{array}{l}Re(1+2i)\\ \mathrm{>>>}1\end{array}$

$\begin{array}{l}Im(1+2i)\\ \mathrm{>>>}2\end{array}$

$\begin{array}{l}|1+2i|\\ \mathrm{>>>}2.23606797749979\end{array}$

$\begin{array}{l}\stackrel{\mathrm{\_\_\_\_\_\_\_}}{1+2i}\\ \mathrm{>>>}1-2*i\end{array}$