To find: 7^th term in the expansion of

Formula used: (i)

(ii) T_r+1 = ⁿC_r a^n-r b^r

For 7^th term, r+1=7

⇒ r = 6

In,

7^th term = T₆₊₁

⇒ (28)

⇒

Ans)