Řeš v ℝ nerovnice:
\large x\left( {x-2} \right) \le 2 x-4
\large K = \left \{ 2 \right \}
\large K = \left \{ 4 \right \}
\large K = \left \{ -2 \right \}
\large K = \left \{ 0 \right \}