Question

$7 \sqrt{5 \sqrt{5} | }$
کالا​

Answer 1

$7 \sqrt{ \sqrt{5 {}^{2} } } \sqrt{5} = 7 \sqrt{ \sqrt{5 {}^{2} } } \times 5 = \\ 7 \sqrt{5 {}^{3} } = 7 \sqrt[4]{5 {}^{3} } = 7\sqrt[4]{125}$