Question

Вычислите
$sqrt[7]{5- sqrt{26} } * sqrt[7]{5+ sqrt{26} }$

Answer 1

⁷√(5-√26)*⁷√(5+√26) = ⁷√((5-√26)(5+√26)) = ⁷√(5²-√26²) =⁷√(25-26)=⁷√(-1 )=-1