Negative Exponent Problem  TOPIC_SOLVED

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Negative Exponent Problem

Postby maroonblazer on Sun Dec 04, 2011 12:33 am

Hi,
The problem states:
"Write the following expression with only positive exponents and in simplest form. Variables are not equal to zero".


The answer is:


From the initial expression I get:


It's here that I get stuck. The next step seems like it would be:


From there you'd go:


But that seems to go nowhere.

Help?

Thanks,
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  TOPIC_SOLVED

Postby stapel_eliz on Sun Dec 04, 2011 1:51 am

maroonblazer wrote:

It's here that I get stuck. The next step seems like it would be:

This would be like trying to convert "1/2 + 1/32" to a common denominator by multiplying 32 by 2, but "2" and "64" aren't "common". Instead, you'd need to convert the "2" to "32": (1/2)(1/16) + 1/32 = 16/32 + 1/32 = (16 + 1)/32.

Use that same process here. :wink:
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Re: Negative Exponent Problem

Postby maroonblazer on Sun Dec 04, 2011 6:22 am

Instead, you'd need to convert the "2" to "32":


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Thank you,
mb
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