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QUESTION

# How do you solve log x + log 5 = 2?

use laws of logarithm: log AB = log A + log B; change to single log: then change to exponential, x = 20 (Answer)

log x +log 5 = 2 log 5x=2 exponential form: 5x = 10^2 (in common log, the base is 10) 5x = 100 x = 20 (ans)