Exponential and Logarithmic Functions Using properties of logarithms to evaluate expressions Use the properties of logarithms to evaluate each of the following expres (a) $\log _{6} 4+2 \log _{6} 3=\square$ (b) $\ln e^{5}-\ln e^{2}=\square$.

Step 1 ：First, we calculate the logarithm base 6 of 4, which is approximately 0.7737056144690831.

Step 2 ：Next, we calculate the logarithm base 6 of 3 squared, which is approximately 1.226294385530917.

Step 3 ：We then add the two results together, which gives us a final result of 2.0.

Step 4 ：Therefore, the expression \( \log _{6} 4+2 \log _{6} 3 \) simplifies to 2.

Step 5 ：Final Answer: \(\boxed{2}\)