SOLUTION: Log base 2 (8x) - log base 2 (x squared minus 1) = log base 2 3
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Question 703564: Log base 2 (8x) - log base 2 (x squared minus 1) = log base 2 3
Found 2 solutions by nerdybill, josmiceli:
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
Log base 2 (8x) - log base 2 (x squared minus 1) = log base 2 3
x = {-1/3, 3}
we can throw out the negative solution (extraneous) leaving:
x = 3
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Use the quadratic formula
and
This negative result can't be used because of
, which gives me
The log to a positive base cannot give a negative result
The result is OK
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