Řeš v ℝ nerovnice:
\large x \geq \sqrt 2
\large K = \left \langle \sqrt 3 ;\infty \right)
\large K = \left \langle \sqrt 2 ;5 \right)
\large K = \left \langle \sqrt 2 ;\infty \right)
\large K = \left \langle -\sqrt 2 ;\infty \right)