1.

4 \log 4 + 2 \log 5 - \log 15

Answer»

Use log a + log b = log(ab)log a - log b = log(a/b)

4 log4 + 2 log 5 - log 15

log 4⁴ + log 5² - log 15

log (256 × 25)/15

log (256×5)/3

log(1,280/3)



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