Rieš v \( \R \) rovnicu:
\( \normalsize\sqrt{10-5x}+2=x \)
\( \normalsize K=\left\{2\right\} \)
\( \normalsize K=\left\{3\right\} \)
\( \normalsize K=\left\{-2\right\} \)
\( \normalsize K=\left\{0\right\} \)