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Exponents

Negative Exponents

For any nonzero number b, we define     b^(-1)=1/b ,      b^(-2)=1/(b^2). .

And for any positive integer n,     b^(-n)=1/(b^n). .

We have      b^n*b^(-n)=1. .


Example 2

2^(-3)=1/(2^3)=1/8.


Study some worked examples. Each time you click "New Example" a new example will appear.



 

 

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Exercise 2.

Now practice some on your own. Provide the final answer only. The middle step shown in Example 2 is not required.



 

 

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