Simplify 1/2√486 -√27/2
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1/2 √486 - √27/2 = 1/2 × √2×3²×3²×3² - √27/2 = 27√2/2 - √27/2 = √27/2 (√27×√2 - 1) = 3√3/2 (3√3×√2 - 1) = 3√3/2 (3×1.73×1.41 - 1) = 3√3/2 (3×2.43 - 1) = 3√3/2 (7.29-1) = 3×1.73/2 × 6.29 = 16.32 [Ans]
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