Řeš v ℝ rovnice:
\large \Large \frac{{x^{2}-3 x+2}}{{x^{2}+1}}\large = 0
\large K = \left \{ {-1;2} \right \}
\large K = \left \{ {1;3} \right \}
\large K = \left \{ {0;3} \right \}
\large K = \left \{ {1;2} \right \}