Answer

Step by step solution by experts to help you in doubt clearance & scoring excellent marks in exams.

Updated On: 7-12-2020

Apne doubts clear karein ab Whatsapp par bhi. Try it now.

CLICK HERE

Loading DoubtNut Solution for you

Watch 1000+ concepts & tricky questions explained!

14.3 K+

700+

Text Solution

Answer :

`(35x^(6))/48`Solution :

rth term from the end `(n-r +2)th` term. <br> ` :. 4th " term from the end " =(7-4+2)th` term = 5th term. <br> `T_(r+1) = (-1)^(r)*^(7) C _(r) (3/(x^(2)))^((7-r)) *((x^(3))/6)^(r) = (-1)^(r) xx .^(7)C_(r) xx 3 ^((7-2r)) xx 2^(-r) xx x^((5r-14)).` <br> `T _(5) = T_((4+1)) = (-1)^(4) xx .^(7)C_(4) xx 3^(-1) xx 2^(-4) xx x^(6) = .^(7)C_(3) xx 1/((3 xx 2^(4)))x^(6) = (35x^(6))/48.`