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How to find the coefficient of x in the expansion of (3x-2/x)^5 ?

Guest Dec 9, 2014

Best Answer 

 #1
avatar+87309 
+5

The only term that will have an x term is this one:

C(5, 2) (3x)^3 (2/x)^2 = 1080x^3/x^2 = 1080x

So, the coefficient on x is  1080

 

CPhill  Dec 9, 2014
 #1
avatar+87309 
+5
Best Answer

The only term that will have an x term is this one:

C(5, 2) (3x)^3 (2/x)^2 = 1080x^3/x^2 = 1080x

So, the coefficient on x is  1080

 

CPhill  Dec 9, 2014

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