Rieš v \( \R \) rovnicu:
\( \normalsize2x^2+x+3-\left(x-1\right)^2=x^2+5 \)
\( \normalsize K=\left\{2\right\} \)
\( \normalsize K=\left\{-1\right\} \)
\( \normalsize K=\left\{0\right\} \)
\( \normalsize K=\left\{1\right\} \)