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Find the coefficient of x^9 in the expa...

Find the coefficient of `x^9` in the expansion of `(x^2-1/(3x))^9`.

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RD SHARMA ENGLISH-BINOMIAL THEOREM-All Questions
  1. Find the coefficient of x^7 in the expansion of (x-1/(x^2))^(40).

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  2. Find the coefficient of : x^(-15) in the expansion of (3x^2-a/(3x^3))^...

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

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  4. Find the coefficient of \ x^m in the expansion of (x+1/x)^ndot

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  5. The co-efficient of x in the expansion of (1-2x^(3) + 3x^(5)) (1+1/x)^...

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  6. Find the coefficient of a^5b^7""in""(a-2b)^(12)

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  7. Find the coefficient of x in the expansion of (1-3x+7x^2)(1-x)^(16).

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  8. Does the expansion of (2x^2-1/x)^(20) contain any term involving x^9?

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  9. Show that the expansion of (x^2+1/x)^12 does not contain any term invo...

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  10. Find the middle term in the expansion of ((2x)/3-3/(2x))^(20)

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  11. Find the middle term in the expansion of : (x^2-2/x)^(10)

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  12. Find the middle term in the expansion of : (a/x+\ b x)^(12)

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  13. Find the middle term in the expansion of : (x/a-a/x)^(10)

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  14. Find the middle term in the expansionansion of (3x-x^3/6)^9.

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  15. Find the middle term in the expansion of : \ (3x-2/(x^2))^(15)

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  16. Find the middle term in the expansion of (2x^2-1/x)^7

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  17. Find the middle term in the expansion of : (x^4-1/(x^3))^(11)

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  18. Find the middle term in the expansion of : \ (x-1/x)^(10)

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  19. Find the middle term in the expansion of : (1+3x+3x^2+x^3)^(2n)

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  20. Find the middle term in the expansion of : (1-2x+x^2)^n

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