Knowing that logarithm functions and exponential functions are inverse to each other, the procees to convert a logarithmic equation to its equivalent is to perform all the operations to set an equation of the typ:

,
then invert to show it equivalent form:

.
With that you have solved the equation for x.
(x + 5) * (x − 5) =
x² - 25
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x * x = x² and 5 * (-5) = -25