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