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Suppose the decimal \(0.28\) is equal to \(\frac{1}{n}+\frac{2}{n^2}\), where \(n\) is negative. Find \(n\).

 Nov 25, 2020
 #1
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(n+2)/n2  = .28

.28n= n+2

.28n2 -n-2=0

quadratic formula   n=   5       or   -1.42857<

 Nov 25, 2020

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