I get x = 5 and x = -4 but the solution guide rejects the x = -4. Is this because plugging in the value of -4 into the logarithmic expression is not possible or as the calculator would "error?"
I get x = 5 and x = -4 but the solution guide rejects the x = -4. Is this because plugging in the value of -4 into the logarithmic expression is not possible or as the calculator would "error?"
-4 is rejected because there are no real solutions to a negative logarithm. Since all logs must be greater than 0 only x=5 is a solution