1) find the value of a so that the term independent of x in the expansion of (rootx + a/x2)10 - Maths - Binomial Theorem

Question

1) find the value of a so that the term independent of x in the
expansion of (rootx + a/x2)10 is 405

2) if the coefficients of the 2nd term, 3rd term and 4th term in
the expansion of (1+x)2n are in ap then show that
2n2 - 9n +7=0

Lovina Kansal · Accepted Answer

Kindly refer the similar link for your query

https://www meritnation
com/ask-answer/question/find-value-of-a-so-that-the-term-independent-of-x-in-rootx/math/6906980

https://www meritnation
com/ask-answer/question/the-coefficients-of-2nd-third-and-fourth-terms-in-the-expan/binomial-theorem/6840710
Regards

1) find the value of a so that the term independent of x in the expansion of (rootx + a/x2)10 is 405. 2) if the coefficients of the 2nd term, 3rd term and 4th term in the expansion of (1+x)2n are in ap then show that 2n2 - 9n +7=0.