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The next problem is a fraction with a negative exponent on top, but only positive exponents on the bottom:

The x-2 on top of the fraction bar is moved below it, and its exponent is changed from negative two to positive two. Since there is already x2 on the bottom, they are multiplied together. The number 1 is left on the top of the fraction because, as you may recall, when a term does not have an explicit coefficient, it has an implicit coefficient of 1.

The next page links to various negative exponent resources.


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