Algebra-2

Question Analysis
This problem assesses the ability to simplify radical expressions with higher indices and variables by dividing the radicands and simplifying the result.

Key Concept Explanation
When dividing two radicals with the same index, the quotient of the radicands becomes the new radicand. Coefficients are divided separately.

Step-by-step Solution
1. Confirm conditions: Index = 4 (even); radicands 81y⁴ ≥ 0, y > 0; same index.
2. Separate coefficients and radicals: .
3. Simplify the radicand:

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