Question

log (x+3) + log x = 2

Answer 1

Use the rule of logs:

\( \log a + \log b = \log (ab) \)

Answer 2

a= x+3
b= x

use the rule that student wrote.

Answer 3

Then use the definition of log:

\( \log_{10} x = y\) means \( 10^y = x\)