Řeš v ℝ rovnice:
\large 5\cdot \left \{5\cdot \left[ 5\cdot \left( 5 x-4\right) -4\right] -4 \right \} =5
K = \left\{ 0 \right\}
K = \left\{ 2 \right\}
K = \left\{ 1 \right\}
K = \left\{ -1 \right\}