SOLUTION: Having problems with this problem 9log9(7)

Question 977973: Having problems with this problem 9log9(7)
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!

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I can rewrite this as:

I can take the log base 10 of both sides

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check:

The error is due to rounding off, I think
They may want an "exact" answer and not a
calculated answer. That would be in terms of
roots and powers. Hope this is OK.

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