Tough Exponent Problem :: Manhattan GMAT Forums

Posted: Mon Jul 07, 2008 7:35 pm

= ?

Does anyone have a two minute solution for this baby?

A) 1

B) 9 - 4(sq. rt 5)

C) 18 - 4(sq. rt 5)

D) 18

E) 20

Posted: Mon Jul 07, 2008 7:36 pm

Highlight line below for answer

OA ANSWER: E

Posted: Tue Jul 08, 2008 7:20 am

Does anyone have a two minute solution for this baby?

E) 20

just apply (a+b)^2
and (a-b) (a+b)
formula

Posted: Tue Jul 08, 2008 1:46 pm

Anonymous wrote:

Does anyone have a two minute solution for this baby?

E) 20

just apply (a+b)^2
and (a-b) (a+b)
formula

Can you elaborate a little please?

Posted: Tue Jul 08, 2008 8:51 pm

*******PAGING RON**********

Posted: Wed Jul 09, 2008 1:21 am

[quote="Anonymous"]

Anonymous wrote:

Does anyone have a two minute solution for this baby?

Can you elaborate a little please?

Sorry dude very hard to draw and explain.
but hey you can check it at this link also
http://www.manhattangmat.com/forums/rt-9-rt80-rt-9-rt80-2-t530.html

Posted: Tue Jul 29, 2008 3:57 am

Anonymous wrote:

*******PAGING RON**********

check out the thread referenced in the post above this one. if you still don't understand the problem, then post back and i'll try to clear up any problems that may exist.

by the way, here's a radical sign. copy and paste it if you want to post:
√