Rieš graficky rovnicu:
\( \normalsize-x^2+2x-1=0 \)
\( \normalsize K=\left\{-1\right\} \)
\( \normalsize K=\left\{0\right\} \)
\( \normalsize K=\left\{1\right\} \)
\( \normalsize K=\left\{2\right\} \)
