Rieš v \( \R \) rovnicu:
\( \normalsize\sqrt{7-2\sqrt{x}}=\sqrt{18-13\sqrt{x}} \)
\( \normalsize K=\left\{1\right\} \)
\( \normalsize K=\left\{2\right\} \)
\( \normalsize K=\left\{3\right\} \)
\( \normalsize K=\left\{0\right\} \)