SOLUTION: solve for x: log 16 4=x log x 81=4 thanks so much

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Question 550001: solve for x:
log 16 4=x
log x 81=4
thanks so much
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+log%2816%2C4%29+=+x+
You can rewrite this as
+16%5Ex+=+4+
The square root of 16 is 4, so
+16%5E%281%2F2%29+=+4+
+x+=+1%2F2+
-------------
+log%28x%2C81%29+=+4+
I can rewrite this as
+x%5E4+=+81+
+3%5E4+=+81+
+x+=+3+
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If you get confused, remember
" logs are exponents"
Whenever you have
log( base,a thing ) = another thing,
another thing is an exponent
with some base.