Wednesday 25 May 2016

algebra precalculus - Finding a coefficient of $x^6$ in the expansion $(x-1)^5 (x+1)^5$

Find the coefficient of $x^6$ in the expansion $(x-1)^5 (x+1)^5$.



Is this question binomial? I understand the basiscs of the question but am unsure of how to complete the second part of the question.




Any assistance is greatly appreciated.



Thank you.

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