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\(k, a_2, a_3\) and \(k, b_2, b_3\) are both nonconstant geometric sequences with different common ratios. We have:

 

\(a_3-b_3=3(a_2-b_2).\)

 

Find the sum of the common ratios of the two sequences.

 May 5, 2019
 #1
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As follows:

 

 May 5, 2019

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