Řeš v \( \R \) rovnici:
\( \large \sqrt {15-x} + \sqrt {3-x} = 6 \)
\( \large K = \left \{ { - 2} \right \} \)
\( \large K = \left \{ { 1} \right \} \)
\( \large K = \left \{ { 0} \right \} \)
\( \large K = \left \{ { - 1} \right \} \)