Rieš v \( \R \) rovnicu:
\( \large \Large \frac{{x-1}}{{x+1}}\large = 0 \)
\( K=\lbrace0\rbrace \)
\( K=\lbrace2\rbrace \)
\( K=\lbrace-1\rbrace \)
\( K=\lbrace1\rbrace \)