Ответ:
√(5-√7)² ÷ √(1+√7)² = (5-√7) ÷ (1+√7) = 5-√7/1+√7 = (5-√7)×(1+√7)/-6 = 5-5√7-√7+7/-6 = 6(2-√7)/-6 = -(2-√7) = -2+√7 ≈ 0,64
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Ответ:
√(5-√7)² ÷ √(1+√7)² = (5-√7) ÷ (1+√7) = 5-√7/1+√7 = (5-√7)×(1+√7)/-6 = 5-5√7-√7+7/-6 = 6(2-√7)/-6 = -(2-√7) = -2+√7 ≈ 0,64