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parkjiyeon1999

($\frac{1}{a-\sqrt{a}}$+$\frac{1}{\sqrt{a}-1}$):$\frac{\sqrt{a}+1}{a-2\sqrt{a}+1}$

=($\frac{1}{\sqrt{a}.(\sqrt{a}-1)}$+$\frac{1}{\sqrt{a}-1}$):$\frac{\sqrt{a}+1}{(\sqrt{a}-1)^2}$

=$\frac{1+\sqrt{a}}{\sqrt{a}.(\sqrt{a}-1)}$.$\frac{(\sqrt{a}-1)^2}{\sqrt{a}+1}$

=$\frac{\sqrt{a}-1}{\sqrt{a}}$
 
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