Q. 214.5( 11 Votes )

# Find the 7^{th} term in the expansion of.

Answer :

To find: 7^{th} term in the expansion of

Formula used: (i)

(ii) T_{r+1} = ^{n}C_{r} a^{n-r} b^{r}

For 7^{th} term, r+1=7

⇒ r = 6

In,

7^{th} term = T_{6+1}

^{}

⇒ (28)

⇒

Ans)

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