SOLUTION: evaluate by simplifying 2<sup>3</sup>×8<sup>-1</sup>

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Question 495401: evaluate by simplifying
23×8-1

Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!
23×8-1

23 means 2×2×2 which is 8.  So now we have:

  8×8-1

and since 8 is the same as 81, we now have:

  81×8-1

Now add the exponents of 8 and get

  80

Any positive or negative number to the zero power is 1

Answer:  1

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You can also do it by using the definition of negative exponents:

23×8-1

23×1%2F8

8×1%2F8

   1

Edwin