January 2019 1 13 Report
Zad. na nudę:
18.
Uprość wyrażenie: ( \frac{ \sqrt{a} }{2} - \frac{1}{2 \sqrt{a} } )^{^2}*( \frac{ \sqrt{a}-1 }{\sqrt{a}+1}- \frac{\sqrt{a}+1}{\sqrt{a}-1})
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