Question

помогите решить пример

Answer 1

$sqrt{4- sqrt{6 -sqrt{19}}} * sqrt{4+ sqrt{6 -sqrt{19}}} * sqrt{10 -sqrt{19}} =$

$=sqrt{(4- sqrt{6 -sqrt{19}}) ({4+ sqrt{6 -sqrt{19}})}(10 -sqrt{19})} =$

$=sqrt{16 - 6+sqrt{19}} * sqrt{10 -sqrt{19}} =$

$=sqrt{(10 + sqrt{19})(10 -sqrt{19})} = sqrt{100 - 19} = sqrt{81} = 9$

Ответ: x={9}