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Find the coefficient of x^9 and x^10 in ...

Find the coefficient of `x^9` and `x^10` in ` (2x^2 - 1/x)^20`

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The correct Answer is:
`0, ""^20C_10. 2^10`
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AAKASH SERIES-BINOMIAL THEOREM-EXERCISE - 3.1 (VERY SHORT ANSWER QUESTIONS)
  1. Find the coefficient of x^(-8) in (2x^4 - (1)/(3x^2) )^5

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  2. Find the coefficient of x^3 in ( sqrt(x^5) + (3)/(sqrt(x^3)) )^6

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  3. Find the coefficient of x^9 and x^10 in (2x^2 - 1/x)^20

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  4. Find the independent of x in ((x^(1//2))/(3) - (4)/(x^2))^10

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  5. Find the independent of x in ((3)/(root(3)(x)) + 5 sqrtx)^25

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  6. Find the independent of x in (4x^3 + (7)/(x^2))^14

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  7. Find the term independent of x in the expansion of ((2x^(2))/(5)+(15...

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  8. Find the independent of x in (3x^2 + (5)/(x^3) )^12

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  9. Find the independent of x in (2x^2 - 3/x)^9

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  10. Find the independent of x in ((sqrtx)/(3) - (4)/(xsqrtx))^12

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  11. Prove that : Find the term independent of x (that is the constant ter...

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  12. Find the term independent of x in (1+3x)^(n)(1+(1)/(3x))^(n).

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  13. Find the middle term (s) in the expansion of ((3x)/(7) - 2y)^10

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  14. Find the middle term (s) in the expansion of (4x^2 + 5x^3)^17

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  15. Find the middle term (s) in the expansion of ((3)/(p^3) + 5p^4)^20

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  16. Find the middle term (s) in the expansion of (3x^2 + (5)/(x^3))^12

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  17. Find the middle terms are in the expansion of (2x+3y)^7

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  18. If the k^(th) term is the middle term in (x^2 - (1)/(2x))^20 find Tk a...

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  19. Find the largest binomial coefficients in the expansion of (1+x)^19

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  20. Find the largest binomial coefficients in the expansion of (1 + x)^24

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