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If (7+4sqrt3)^n=I+F where I and n are +v...

If `(7+4sqrt3)^n=I+F` where I and n are +ve integers and F is +ve proper fraction, then `(I+F)(1-F)=`

A

0

B

1

C

`-1`

D

none of these

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The correct Answer is:
B
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DIPTI PUBLICATION ( AP EAMET)-BINOMIAL THEOREM-EXERCISE 1A (BINOMIAL THEOREM WITH INTEGRAL INDEX)
  1. If (3+sqrt8)^n - I+F where In are positive integer , 0 lt F lt 1 then ...

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  2. If (4+sqrt15)^n=I+F when I, n are positive integers, 0 lt F lt 1 then ...

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  3. If (7+4sqrt3)^n=I+F where I and n are +ve integers and F is +ve proper...

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  4. Let R=(5 sqrt5+11)^(2n+1) , f=R-[R]. Then Rf=

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  5. If (6 sqrt6+14)^(2n+1)=R and F=[R], where [R] denotes the greatest int...

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  6. If R=(5 +sqrt21)^(2n+1) and f=R-[R], where [R] denotes the greatest in...

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  7. Let R=(2+sqrt3)^(2n) and f=R-[R] where [ ] denotes the greatest intege...

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  8. For natural numbers m, n if (1-y)^m (1+y)^n=1+a1 y +a2 y^2 + …, and a1...

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  9. The middle term in the expansion of (x+(1)/(x))^10 is

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  10. The middle term of (a//x-x//a)^10 is

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  11. Middle term in the expansion of (2x-(3)/(x))^15 is

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  12. The middle term of (x+(1)/(x))^(2n) is

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  13. The middle terms of ((x^(3//2)y)/(2)+(2)/(xy^(3//2)))^13 are

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  14. The middle terms of (3x^2+5//x^3)^11 are

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  15. The middle term of (1-3x+3x^2-x^3)^(2n) is

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  16. If the middle term of (1+x)^ (2n) is (1.3.5….(2n-1)k)/(n!) then k=

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  17. The greatest coefficient of (1+x)^10 is

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  18. The greatest coeff. of (x//y+y//x)^(2n+1) is

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  19. The value of the greatest term in sqrt3(1+1//sqrt3)^(20) is

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  20. The coefficient of the middle term in the binomial expansion in powers...

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