SOLVING LOGARITHMIC EQUATIONS


Note:

If you would like an in-depth review of logarithms, the rules of logarithms, logarithmic functions and logarithmic equations, click on logarithmic function.



Solve for x in the following equation.


Problem 8.7a:

$5\log _{3}\left( 4x^{2}-7x-10\right) =20$
Solution

Problem 8.7b:
$15\log _{80}\left( 4x^{2}-7x-10\right) =60$
Solution

Problem 8.7c:

$\displaystyle \frac{7}{8}\log _{\displaystyle \frac{3}{4}}\left(
4x^{2}-7x-10\right) =140$
Solution


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