решите пожалуйста
[tex] \sqrt{4 + \sqrt{6} } \times \sqrt{4 - \sqrt{6} } = [/tex]
[tex] \sqrt{4 + \sqrt{6} } \times \sqrt{4 - \sqrt{6} } = [/tex]
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Answers & Comments
√(4+√6)*√(4-√6) = √((4+√6)(4-√6)) = √(4²-(√6)²) = √(16-6) = √10.
Формула (a-b)(a+b)=a²-b²; √x*√y = √(xy)