Information reference tables what is the solution set of the equation log4 (x2 + 3x) − log4 (x + 5) = 1? a. { } b. {5} c. {4, −5} d. {−4, 5

Use this property of logarithms:



Your equation transforms into:



Now, you have to apply the definition of a logarithm to express the equation in exponential form:



In case you don't remember, this is the definition of a logarithm:



The log is the exponent (y) you have to raise the base (b) to in order to get the power (x).

Finally, solve the rational equation:





The correct answer is d.