The exponential form of an expression is representing multiple multiplications of the same term in a more condensed form using an exponent.
For example, if we have:

We can express this in the exponential form:

where the exponent represents the number of times that we multiply the same term.
In this case, we have the expression:

We have three times the term -8x multiplied by -8x. We express this in the exponential form as follows:

We use the parentheses around -8x because the whole expression is multiplied 3 times, thus the whole expression -8x has to have the exponent.
Answer:
