Rieš v \( \mathbb{R} \) rovnicu \( 3 x^{2}+x-2=0 \) a urob skúšku.
\( K=\left\{-1 ; \frac{3}{2}\right\} \)
\( K=\left\{1 ; \frac{2}{3}\right\} \)
\( K=\left\{-2 ; \frac{2}{3}\right\} \)
\( K=\left\{-1 ; \frac{2}{3}\right\} \)