Posted by **B.B.** on Tuesday, April 20, 2010 at 8:42pm.

I am to express the following using a positive exponent. Then I have to simplify the expression. Do not evaluate.

9^-2.

Here is my answer:

9^-2=1/81.

Is this correct?

Thanks.

- Math -
**Damon**, Tuesday, April 20, 2010 at 8:42pm
yes

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