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3 votes
Find the 5th term of the expansion of (x + y)9.

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User Heedfull
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1 Answer

3 votes
(r + 1)th term of (x + y)^n = nCr x^(n-r)y^r

so here we have 9C4 x^(9-4)y^4

= 126x^5y^4 Answer
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User Cato
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