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**evene****Member**- Registered: 2015-10-18
- Posts: 272

Let's say that I am given the product of two binomials

And I have expanded them via Newton's Binomial Theorem

I'm wondering how to find the coefficient of

in this case. And can this be generalized?Offline

You could pull out a factor of from the second pair of parentheses, and then both of your bracketed terms are the same. It then suffices to find the coefficient of in the expansion of , which you can do just by using the binomial formula.

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