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Quant- Problem Solving

What is the value of (4x^3-x)/(2x+1)(6x-3), when x=9999 ?
A) 999999
B) 111111
C) 33333
D) 3333
E) 333
Pls Explain…

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Written by Chandu on June 30th, 2009 with 30 comments.
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What is the value of (4x^3-x)/(2x+1)(6x-3), when x=9999 ?

A) 999999
B) 111111
C) 33333
D) 3333
E) 333

Pls Explain…

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Written by Chandu on June 30th, 2009 with 30 comments.
Read more articles on GRE Question of the Day.

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30 comments

Read the comments left by other users below, or:

Get your own gravatar by visiting gravatar.com Madhur
#1. March 30th, 2007, at 3:37 PM.

D, simplifying you get x/3

Get your own gravatar by visiting gravatar.com Chandu
#2. March 30th, 2007, at 3:42 PM.

Cud u pls explain…

Get your own gravatar by visiting gravatar.com Madhur
#3. March 30th, 2007, at 3:54 PM.

taking x and 3 , common
x(4x^2-1)
========
3(2x+1)(2x-1)

x(2x+1)(2x-1)
==========
3(2x+1)(2x-1)
=x/3

Get your own gravatar by visiting gravatar.com yadav
#4. March 30th, 2007, at 4:55 PM.

rocks!!!!!!!

Get your own gravatar by visiting gravatar.com sreecharan
#5. March 31st, 2007, at 5:53 PM.

yaa absolutely me to agre with ur ans
Ans is “D”
if u simplify the expression we will get the resultant as x/3.

Get your own gravatar by visiting gravatar.com arun
#6. April 2nd, 2007, at 10:07 AM.

simplifying the expression would yield x/3.ans would be 3333.

Get your own gravatar by visiting gravatar.com harini
#7. March 30th, 2008, at 10:15 PM.

ans is :D
4X^3-X=X(4X^2-1)
X(4X^2-1)/(2X+1)(3(2X-1))
=X/3=9999/3=3333.

Get your own gravatar by visiting gravatar.com Gourav
#8. March 31st, 2008, at 12:41 AM.

D :-)
(4x^3-x)/(2x+1)(6x-3)
=x(4x^2-1)/(2x+1)3(2x-1)
=x(2x+1)(2x-1)/3(2x+1)(2x-1)
=x/3
now,x=9999,
then,x/3=9999/3=3333=option D :-)

Get your own gravatar by visiting gravatar.com Mohan
#9. March 31st, 2008, at 9:39 PM.

ya i could with all of u
ans is D

Get your own gravatar by visiting gravatar.com bhavin
#10. June 30th, 2008, at 9:23 PM.

none other.. easy one.. D

Get your own gravatar by visiting gravatar.com Kofi
#11. June 30th, 2008, at 9:56 PM.

D

Get your own gravatar by visiting gravatar.com Sweta
#12. June 30th, 2008, at 9:57 PM.

Ans: D

Get your own gravatar by visiting gravatar.com Charlee
#13. July 1st, 2008, at 2:34 AM.

D — I love it when they work out easily!

Get your own gravatar by visiting gravatar.com prabin
#14. July 1st, 2008, at 9:26 PM.

d

Get your own gravatar by visiting gravatar.com gre n gre
#15. July 4th, 2008, at 11:33 PM.

simple d

Get your own gravatar by visiting gravatar.com bhattarai.suni
#16. July 20th, 2008, at 1:52 AM.

what is the meaning of this sign ^ please answer me

Get your own gravatar by visiting gravatar.com viki
#17. July 20th, 2008, at 10:55 AM.

D

Get your own gravatar by visiting gravatar.com manishtuteja10
#18. June 30th, 2009, at 12:43 AM.

ddddddddddddddddddddddddddd
x/3
9999/3
3333

Get your own gravatar by visiting gravatar.com gill
#19. June 30th, 2009, at 8:42 AM.

please explain the solution of ^ sign and how did u guys get 4x^3-x = x(4x ^ 2 -1)

Get your own gravatar by visiting gravatar.com deepugupta
#20. June 30th, 2009, at 1:30 PM.

^ means raised to the power

Get your own gravatar by visiting gravatar.com karthik
#21. June 30th, 2009, at 10:58 PM.

4X^3-X=X(4X^2-1)
can any1 explain how they got the above term

Get your own gravatar by visiting gravatar.com nil
#22. July 1st, 2009, at 11:23 PM.

D) 3333

4X^3-X=X(4X^2-1)=x(2x+1)(2x-1)=a
and (2x+1)(6x-3)=3(2x+1)(2x-1)=b

given…a/b=x/3

Get your own gravatar by visiting gravatar.com karthik
#23. July 2nd, 2009, at 12:37 AM.

hi nil,
pls explain the how you simplify 4X^3-X.I wud appreciate if u cud mail me at karthik_4ual@yahoo.co.in

Get your own gravatar by visiting gravatar.com Kofi DL
#24. July 2nd, 2009, at 2:47 PM.

i also prefer D…

Get your own gravatar by visiting gravatar.com ragupathy.j
#25. July 2nd, 2009, at 6:07 PM.

4x^3-x=x(4x^2-1)………….
can any one explain how they got above term.pls……………..

Get your own gravatar by visiting gravatar.com jainisuni
#26. July 2nd, 2009, at 10:41 PM.

D

Get your own gravatar by visiting gravatar.com hemanshu_abbey
#27. July 3rd, 2009, at 3:15 PM.

D

Factorize and u will c

Get your own gravatar by visiting gravatar.com Shruti Madan
#28. July 6th, 2009, at 3:04 PM.

the answer is D) 3333.

Get your own gravatar by visiting gravatar.com Shruti Madan
#29. July 6th, 2009, at 3:10 PM.

(4x^3-x)/(2x+1)(6x-3)
=x(4x^2-1)/(2x+1)3(2x-1) {taking x common outside from
numerartor n takin 3 common from the
term 6x-3, from denominator.}
=x(2x+1)(2x-1)/3(2x+1)(2x-1) {then split numerator 4x^2-1 as
(2x-1)(2x+1).}
=x/3
=9999/3 {substituting value of x(given)}
=3333
Atleast now have u understood? (for all those people, who had NOT understood the sum)

Get your own gravatar by visiting gravatar.com shweta chauhan
#30. July 26th, 2009, at 11:09 PM.

its D

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