Question

Решите уравнения $5x^2=5\sqrt{7+}\sqrt{2}$

Answer 1

$5x^2=5\sqrt{7+\sqrt2}\\\\x^2=\sqrt{7+\sqrt2}\\\\x_1=-\sqrt{\sqrt{7+\sqrt2}}\; \; ,\; \; x_2=\sqrt{\sqrt{7+\sqrt2}}\\\\ili:\; \; \; x_1=-\sqrt[4]{7+\sqrt2}\; \; ,\; \; x_2=\sqrt[4]{7+\sqrt2}$

Ответ:  №4 .