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Source: — Problem Solving |

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by Brent@GMATPrepNow » Mon May 06, 2013 10:03 pm
sayanpaul wrote:If (-27)^x = (1/3)^3
find x.

A.3
B.-3
C.1/3
D.-1/3
E.0
Are you sure you wrote the question correctly?


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Brent Hanneson - Creator of GMATPrepNow.com
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by sayanpaul » Mon May 06, 2013 10:26 pm
i am really sorry...am missing some link
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by ygdrasil24 » Tue May 07, 2013 1:48 am
Just a thought, does the solution exist for k for a simple equation
2^k=-2^2 ? If not please explain why
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by Atekihcan » Tue May 07, 2013 3:09 am
ygdrasil24 wrote:Just a thought, does the solution exist for k for a simple equation
2^k=-2^2 ? If not please explain why
No, there is no real k for which 2^k will be equal to -2^2
The simple reason is -2^2 is a negative quantity and any power of 2 (positive or negative, integer or fraction) will be always positive.
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