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# Basic Exponent Problem

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Intern
Joined: 04 Jun 2004
Posts: 8

Kudos [?]: 26 [0], given: 0

Location: Gmat Hell
Basic Exponent Problem [#permalink]

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17 Aug 2004, 09:50
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

Hey guys, I know this is a simple question, but what's the fatstest way to work this type of problem?

(6^14-6^13)*(5^14-5^13)

Kudos [?]: 26 [0], given: 0

CEO
Joined: 15 Aug 2003
Posts: 3454

Kudos [?]: 904 [0], given: 781

Re: Basic Exponent Problem [#permalink]

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17 Aug 2004, 23:13
Roc-a-fella wrote:
Hey guys, I know this is a simple question, but what's the fatstest way to work this type of problem?

(6^14-6^13)*(5^14-5^13)

6^13* ( 6-1 ) * 5^13 * (5-1)

[ taking common terms out of each expression]

5^14* 6^13 *4

[ 5 * 5^13 = 5^14]

is this the answer you are looking for, rocafella?

Praetorian

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GMAT Club Legend
Joined: 07 Jul 2004
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Location: Singapore

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18 Aug 2004, 01:02
By taking out common factors !
6^13(6-1)*5^13(5-1) = (6^13)(5)(5^13)(4)
= (6^13)(5^14)(4)

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Intern
Joined: 04 Jun 2004
Posts: 8

Kudos [?]: 26 [0], given: 0

Location: Gmat Hell

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23 Aug 2004, 09:08
Hey guys thanks for the answer

Kudos [?]: 26 [0], given: 0

23 Aug 2004, 09:08
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# Basic Exponent Problem

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