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March 25, 2017

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Question:

Find the first 3 terms in the expansion, in ascending powers of x, of
(2 + x)^6. Hence, obtain the coefficient of x^2 in the expansion of
(2 + x - x^2)^6

I know the first part of the question, and the first 3 terms are
(64 + 192x + 240x^2 + ...)
How do i use this answer in the second part??

  • same type of binomial theorem question - ,

    see other question.

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