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In the following expansion, find the indicated term. (4x/5  - 5/2x)^9, 7the term

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In the following expansion, find the indicated term.

(4x/5  - 5/2x)9, 7th term

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Here, a = 4x/5, b = -5/2x, n = 9.

For 7th term, r = 6

We have tr+1 = nCran-rbr

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