3의 3분의 2승 = 3^(2/3) = (3^(1/3))^2 = ∛9.
값(소수) ≈ 2.08008382305 (대략 2.08008).
참고(거듭제곱·근의 성질):
https://tool.dikr.co.kr/%EA%B1%B0%EB%93%AD%EC%A0%9C%EA%B3%B1-%EA%B3%84%EC%82%B0%EA%B8%B0-%EA%B1%B0%EB%93%AD-%EC%A0%9C%EA%B3%B1-%EA%B3%B5%EC%8B%9D-%EB%B0%8F-%EA%B3%84%EC%82%B0-%EB%B0%A9%EB%B2%95/
https://www.calculator.io/ko/%EC%84%B8%EC%A0%9C%EA%B3%B1%EA%B7%BC-%EA%B3%84%EC%82%B0%EA%B8%B0/
https://www.desmos.com/scientific?lang=ko