It is currently 21 Nov 2017, 11:03

Close

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

2(2^x) when you simplify this = 2^x+1 how in the world do

  post reply Question banks Downloads My Bookmarks Reviews Important topics  
Author Message
Intern
Intern
avatar
Joined: 13 Jul 2008
Posts: 9

Kudos [?]: [0], given: 0

2(2^x) when you simplify this = 2^x+1 how in the world do [#permalink]

Show Tags

New post 20 Sep 2008, 18:29
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

2(2^x)

when you simplify this = 2^x+1

how in the world do you come up with the simplified answer?

can someone break it down for me?

Kudos [?]: [0], given: 0

Senior Manager
Senior Manager
User avatar
Joined: 09 Oct 2007
Posts: 463

Kudos [?]: 56 [0], given: 1

Re: How do you simplify this? [#permalink]

Show Tags

New post 20 Sep 2008, 19:05
Note that 2^x times 2 is the same as adding one to the exponent. IE: 2^3 * 2 = 8 * 2 = 16 = 2^4.

Hope this helps.

Kudos [?]: 56 [0], given: 1

Intern
Intern
avatar
Joined: 02 Sep 2008
Posts: 45

Kudos [?]: [0], given: 0

Re: How do you simplify this? [#permalink]

Show Tags

New post 25 Sep 2008, 11:48
TrillTalk,

It is simple.

you have given 2(2^x)

= 2^1(2^x)
= 2^1 * 2^x
= 2^(1 + x)
= 2^x+1 But make sure with your interpretation.

Kudos [?]: [0], given: 0

Re: How do you simplify this?   [#permalink] 25 Sep 2008, 11:48
Display posts from previous: Sort by

2(2^x) when you simplify this = 2^x+1 how in the world do

  post reply Question banks Downloads My Bookmarks Reviews Important topics  

Moderator: chetan2u



GMAT Club MBA Forum Home| About| Terms and Conditions| GMAT Club Rules| Contact| Sitemap

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne

Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.