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dashadunya
@dashadunya
November 2021
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Помогите пожалуйста с вычислением!)
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mmb1
Verified answer
√(12 + 2√5) * √((2√3)² - √20) * √31 = √(12 + 2√5) * √(4*3 - √(4*5)) * √31 =
= √(12 + 2√5) * √(12 - 2√5) * √31 = √(12² - (2√5)²) * √31 = √(144 - 20) *√31=
= √124 * √31 = √(4*31) * √31 = 2 * √31² = 2*31=62
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Verified answer
√(12 + 2√5) * √((2√3)² - √20) * √31 = √(12 + 2√5) * √(4*3 - √(4*5)) * √31 == √(12 + 2√5) * √(12 - 2√5) * √31 = √(12² - (2√5)²) * √31 = √(144 - 20) *√31=
= √124 * √31 = √(4*31) * √31 = 2 * √31² = 2*31=62