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Are these the same?

Problem Solving — algebra and arithmetic (GMAT Focus Edition)
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Source: — Quantitative Reasoning |
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Re: Are these the same?

by parallel_chase » Wed Aug 27, 2008 12:15 pm
hengirl03 wrote:Is 1/(3^5) equal to 3^(-5)?

If so, shouldn't 3^5 + 1/(3^5) = 1 ?


Thanks!!
1/3^5 = 3^-5

yes

3^5 + 1/(3^5) = 1 ?

no

Exponents are added only when bases are same and multiplied to each other.

(3^5)*(3^5) = 3^10

3^5 + 3^5 is not the same as above.

Let me know if you still have any doubts.
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by hengirl03 » Wed Aug 27, 2008 12:21 pm
Thanks a lot!
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