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- October 19th 2007, 10:52 AM #1

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## 81^x-2

Question is in topic.

You must express this in form 9^y

I managed to do 1/9^1-x, and got 9^x as my answer (not sure if that's right), but cannot do this question

EDIT: Also, how would you do 3^4x+6, still expressing the answer in the form 9^y?

Thanks!

- October 19th 2007, 11:16 AM #2

- October 19th 2007, 11:17 AM #3

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- October 19th 2007, 12:11 PM #4

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