Use the power-of-a-power rule: (am)k = am·k.
Apply it with a = n, m = 2, k = 9:
(n2)9 = n2·9 = n18.
Final answer: n18
Step-by-step: simplify (n^2)^9 with the power-of-a-power rule (a^m)^k = a^{m·k}. The simplified form is n^{18}.
Use the power-of-a-power rule: (am)k = am·k.
Apply it with a = n, m = 2, k = 9:
(n2)9 = n2·9 = n18.
Final answer: n18
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