Find the 13 th term in the expansion of .

Question

Philoid · Accepted Answer

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