Can anyone tell me how to simplify these negative fractions?

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darkling1
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Can anyone tell me how to simplify these negative fractions?

Postby darkling1 » Fri Aug 20, 2010 2:39 am

10^5(10^-7)/10^2

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stapel_eliz
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Postby stapel_eliz » Fri Aug 20, 2010 11:07 am

darkling1 wrote:10^5(10^-7)/10^2

To learn how to work with negative exponents, try here.

To learn how to simplify with exponents, try here.

:wink:

Miss Mathy
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Re: Can anyone tell me how to simplify these negative fracti

Postby Miss Mathy » Sun Oct 10, 2010 7:41 am

Hi,

The fractions aren't negative, an exponents is. To simplify this it involves knowing your "quotient of powers" and "product of powers" rules as well as what a negative exponent indicates. If you're calling this a fraction, I'm wondering if you can see it as division and multiplication.

Here's the deal: When the bases are the same...
and you're multiplying (indicated by the parentheses), you add the exponents; when you are dividing (indicated by the your fraction bar), you subtract the exponents.

Negative exponents mean place the power in the reciprocal position and then remove the negative.

It's actually kind of fun when you know what you're doing.

~Miss Mathy


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