Which expression is equivalent to RootIndex 3 StartRoot StartFraction 10 x Superscript 5 Baseline Over 54 x Superscript 8 Baseline EndFraction EndRoot? Assume x not-equals 0. StartFraction RootIndex 3 StartRoot 10 x EndRoot Over 3 x squared EndFraction StartFraction x (RootIndex 3 StartRoot 5 x EndRoot) Over 3 EndFraction StartFraction 3 (RootIndex 3 StartRoot 5 x EndRoot) Over x EndFraction StartFraction RootIndex 3 StartRoot 5 EndRoot Over 3 x EndFraction