[tex] a=\frac{1}{ \sqrt{5}} +\frac{1}{ \sqrt{3}} \\ \\ b= \frac{2}{ \sqrt{5}+ \sqrt{3}} \\ \\ a=\frac{1}{ \sqrt{5}} +\frac{1}{ \sqrt{3}} = \frac{ \sqrt{3}+ \sqrt{5}}{ \sqrt{3}* \sqrt{5} } =1,02456386 \\ \\ b=0,50401726 \\ \\ a\ \textgreater \ b
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