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One of the rules of logarithms is as follows;
We can now insert the corresponding values in the question provided, as shown below;
Note that, one of the rules of exponents, states that a number when raised to the power of a negative value, is equivalent to the reciprocal of that expression. An example is shown below;
Therefore, our equation can now be re-written as follows;
However, the question requires the answer to be expressed in exponential form. Therefore,