Solve for a
a=n-\frac{1}{n}
n\neq 0
Solve for n
n=\frac{-\sqrt{a^{2}+4}+a}{2}
n=\frac{\sqrt{a^{2}+4}+a}{2}
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na=n^{2}-1
The equation is in standard form.
\frac{na}{n}=\frac{n^{2}-1}{n}
Divide both sides by n.
a=\frac{n^{2}-1}{n}
Dividing by n undoes the multiplication by n.
a=n-\frac{1}{n}
Divide n^{2}-1 by n.
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