Rieš v \( \R \) rovnicu:
\( \normalsize\sqrt{-x}=2-\sqrt{2-x} \)
\( \normalsize K=\left\{{–2}\right\} \)
\( \normalsize K=\left\{{0}\right\} \)
\( \normalsize K=\left\{{\frac14}\right\} \)
\( \normalsize K=\left\{{–\frac14}\right\} \)