Suppose the decimal \(0.28\) is equal to \(\frac{1}{n}+\frac{2}{n^2}\), where \(n\) is negative. Find \(n\).
(n+2)/n2 = .28
.28n2 = n+2
.28n2 -n-2=0
quadratic formula n= 5 or -1.42857<
+216 
