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Since we will be able to solve this problem if we change the 9 into a logarithm and then combine the logs. Since ln(e) = 1 we can rewrite the expression:
Now we can use the property to move the two coefficients into the argument as its exponent:
Now we start combining the logs. For the first two we will use the property:
For the remaining logs we will use the property:
We now have the desired "e to the ln" form. So this equals:
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