Rieš v \( \R \) rovnicu:
\( \normalsize\left(3x\right)^2-x+2=2\left(x^2-x\right)+7{x^2}+5 \)
\( \normalsize K=\left\{3\right\} \)
\( \normalsize K=\left\{0\right\} \)
\( \normalsize K=\left\{2\right\} \)
\( \normalsize K=\left\{4\right\} \)