100 баллов! Срочно! С подробным пошаговым решением
[tex] \sqrt{99 - 70 \sqrt{2} } [/tex]
[tex] \sqrt{99 - 70 \sqrt{2} } [/tex]
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√(99 - 70√2) = √(50 - 2*5*7√2 + 49) = √(√50² - 2*7*√50 + 7²) = √(√50 - 7)² = |√50 - 7| = {√50 > 7} = √50 - 7 = √(25*2) - 7 = 5√2 - 7