√(√(124-32√15)) = √(√(124-16√60)) = √(√(64-2*8*√60 + 60)) = √(√(8 - √60)² = √(8 - 2√15) = √(5 - 2√5√3 + 3) = √(√5 - √3)² = √5 - √3
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√(√(124-32√15)) = √(√(124-16√60)) = √(√(64-2*8*√60 + 60)) = √(√(8 - √60)² = √(8 - 2√15) = √(5 - 2√5√3 + 3) = √(√5 - √3)² = √5 - √3