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Matematická úloha
Uprav:
\( \large\left({\sqrt{x}-\frac{1}{{\sqrt{x}}}}\right)\cdot\left({\frac{{\sqrt{x}+1}}{{\sqrt{x}-1}}+4\sqrt{x}-\frac{{\sqrt{x}-1}}{{\sqrt{x}+1}}}\right) \)
\( \large = 4 x^2 \)
\( \large = 4 \sqrt{x} \)
\( \large = 4 x \)
\( \large = 2 x \)