Řeš v \( \mathbb{R} \) rovnici:
\( \large \sqrt {4 + 2x-{x^2}} = x-2 \)
\( \large K = \left \{ 2 \right \} \)
\( \large K = \left \{ 3 \right \} \)
\( \large K = \left \{ 0 \right \} \)
\( \large K = \left \{ 4 \right \} \)