Řeš v ℝ rovnice:
\large \Large \frac{{7 x+3}}{{x+\sqrt 2 }}\large = 0
K=\left \{ \frac{3}{7} \right \}
K=\left \{ -\frac{3}{2} \right \}
K=\left \{ -\frac{3}{7} \right \}
K=\left \{ 0 \right \}