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Q24 of 70 Page 371

Find the 13^th term in the expansion of .

To find: 13^th term in the expansion of

Formula used: (i)

(ii) T_r+1 = ⁿC_r a^n-r b^r

For 13^th term, r+1=13

⇒ r = 12

In,

13^th term = T₁₂₊₁

⇒ 18564

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