Hi, there. I was going through the following question (provided in the attachmen

Question

Hi, there. I was going through the following question (provided in the attachment) through the textbook solutions provided by you people, I just wanted to know:

Type here to search Chapter 4.4 A Given equation log(x2-15) We have to solve the given equation. 6E. Comment BE Step 2 of 3A 7F Definition of a logarithm: For a 0 and a 1. he logarithmic function with base ais denoted f (x) log, (x), where y log (x) if and only if ay-x 8F Comment 9F Step 3 of 3 DE Consider log( -15) 2F From the definition of logarithm, we have 0 9:27 AM

Explanation / Answer

here x can be both +5 aswell as -5 because we can see that there is a square with x so even if the x is negative when we will square it it'll become positive
Hence, the log term will be positive because negative^2= positve
so answer will be both +5 and -5

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