√x² = |x|
(-x)² = x²
4 > √5
√(-√5)²+√(√5-4)² = √5 + |√5 - 4| = √5 + 4 - √5 = 4
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Verified answer
√x² = |x|
(-x)² = x²
4 > √5
√(-√5)²+√(√5-4)² = √5 + |√5 - 4| = √5 + 4 - √5 = 4