If x = 3 + 2√2, then the value of ❨ √x - 1 ❩ is: √x

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❨ √x - 1 ❩ 2 = x + 1 - 2 √x x = (3 + 2√2) + 1 - 2 (3 + 2√2) = (3 + 2√2) + 1 x (3 - 2√2) - 2 (3 + 2√2) (3 - 2√2) = (3 + 2√2) + (3 - 2√2) - 2 = 4. ∴ ❨ √x - 1 ❩ = 2. √x

If x = 3 + 2√2, then the value of ❨ √x - 1 ❩ is: √x

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