Řeš v ℝ rovnice:
\large 8 x-x^{2} = 14
\large K = \left \{ {4-\sqrt 2 ;4 + \sqrt 2 } \right \}
\large K = \left \{ {5-\sqrt 2 ;5 + \sqrt 2 } \right \}
\large K = \left \{ {4-\sqrt 3 ;4 + \sqrt 3 } \right \}
\large K = \left \{ {3-\sqrt 2 ;3 + \sqrt 2 } \right \}