Work Step by Step
$\because \log_a M+\log_a N = \log_a (MN)$ $\therefore \log_6 9 + \log_6 4 = \log_6 (9 \cdot 4) = \log_6 36$ With $36=6^2$, $\log_6 36 = \log_6 6^2$ Since $\log_a a^r =r$, then, $\log_6 6^2 = 2$
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