Home
Class 12
MATHS
In the expansion of (1 + x)^n if the 2nd...

In the expansion of `(1 + x)^n` if the 2nd and 3rd terms are respectively a,b then x =

A

`(a^2 - 2b)/(a)`

B

`(a^2)/(a^2 - 2b)`

C

`(a)/(a^2 - 2b)`

D

`(a^2 - 2a)/(a)`

Text Solution

Verified by Experts

The correct Answer is:
D
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • BINOMIAL THEOREM

    AAKASH SERIES|Exercise PRACTICE EXERCISE|95 Videos

  • BINOMIAL THEOREM

    AAKASH SERIES|Exercise EXERCISE - 1.1 (Level - 1) |52 Videos

  • BINOMIAL THEOREM

    AAKASH SERIES|Exercise EXERCISE - I|27 Videos

  • AREAS

    AAKASH SERIES|Exercise Exercise-3.2|21 Videos

  • CIRCLE

    AAKASH SERIES|Exercise EXERCISE -1.4|38 Videos

Similar Questions

Explore conceptually related problems

If A and B are coefficients of x^(n) in the expansion of (1+x)^(2n) and (1+x)^(2n-1) respectively, then find the value of (A)/(B) .

The 3^(rd), 4^(th), 5^(th) terms in the expansion of log_(e )2 are respectively a, b, c then their ascending order is

Knowledge Check

  • If the 2nd and 3rd terms in the expansion of (1+x)^n are 20a and 180a^2 respectively then (x,n)=

    A
    `(2a,10)`
    B
    `(3a,8)`
    C
    `(3a,12)`
    D
    `(4a,7)`

  • In the expansion of (1+x)^n , the coefficients of pth and (p+1) th terms are respectively p and q then p+q=

    A
    n+3
    B
    n+2
    C
    n
    D
    n+1

  • In the expansion of (1 + x ) ^n the coefficients of pth and (p + 1) th terms are respectively p and q, then p + q is equal to

    A
    `n `
    B
    `n + 1 `
    C
    ` n + 2 `
    D
    ` n+ 3 `

    • Similar Questions

    Explore conceptually related problems

    If the sum of odd terms and the sum of even terms in the expansion of (x+a)^n are p and q respectively then p^2+q^2=

    If the first three terms in the binomial expansion of (1+bx)^n in ascending powers of x are 1,6x and 16x^2 respectively then b + n =

    If the coefficient of rth, (r + 1)th and (r+ 2)th terms in the expansion of (1 + x) ^(n) are respectively in the ratio 2:4:5, then (r,n)=

    If the coefficients of x^2 and x^4 in the expansion of (x^(1/3) + (2)/(x^(1/3)) )^18 , (x lt 0) are m and n respectively then m/n is equal to

    If the first three terms in the expansion of (1 -ax)^n where n is a positive integer are 1,-4x and 7x^2 respectively then a =

    Home
    Profile