Practice mode Surds and Indices

What is the value of 81^(0.25) × 81^(0.5)?

Correct answer D. 27

Explanation

When multiplying powers of the same base, add the indices: 0.25 + 0.5 = 0.75. So 81^(3/4) = (⁴√81)³ = 3³ = 27.

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