SOLUTION: Use the Binomial Theorem to find the coeficient of 1/x in the expansion of (2x + 1/x)^3

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Question 631115: Use the Binomial Theorem to find the coeficient of 1/x in the expansion of (2x + 1/x)^3
Answer by Alan3354(69443) About Me  (Show Source):
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Use the Binomial Theorem to find the coeficient of 1/x in the expansion of (2x + 1/x)^3
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%28a%2Bb%29%5E3+=+a%5E3+%2B+3a%5E2b+%2B+3ab%5E2+%2B+b%5E3

= 8x%5E3+%2B+12x+%2B+6%2A%281%2Fx%29+%2B+1%2Fx%5E3
= 6