Final answer:
The expression (n^a)^7 simplifies to n^(7*a) in exponent notation, following the rule of power to a power.
Step-by-step explanation:
The expression (n^a)^7 can be simplified using the rule of power to a power in exponent notation. This rule states that when raising a power to another power, you multiply the exponents.
So when we apply this rule to the expression, it simplifies as follows: (n^a)^7 = n^(a*7). Thus, the solution to the problem is n^(7*a)
Learn more about Exponent Notation