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:

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

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