simplify (5)/(sqrt(2)-1)
(5)/(sqrt(2)-1)
\(\frac{5}{\sqrt2-1}\\ =\frac{5}{\sqrt2-1}\times \frac{\sqrt2+1}{\sqrt2+1}\\ =\frac{5(\sqrt2+1)}{(\sqrt2-1)(\sqrt2+1)}\\ =\frac{(5\sqrt2+5)}{(2-1)}\\ =5\sqrt2+5\)
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