Zjednodušte komplexní číslo:
\( z_{6}=68 i^{68}+10^{3}-151^{15}+25^{2} \)
\( z_{6}=1693+15 i \)
\( z_{6}=1683+15 i \)
\( z_{6}=1693+25 i \)
\( z_{6}=1693-15 i \)
