Question

$\sqrt{15 - \sqrt{32 + \sqrt{25 - \sqrt{81 = } } } }$

Answer 1

$\sqrt{15 - \sqrt{32 + \sqrt{25 - \sqrt{81 }}}} \\ = \sqrt{15 - \sqrt{32 + \sqrt{25 - 9}}} \\ = \sqrt{15 - \sqrt{32 + \sqrt{16}}} \\ = \sqrt{15 - \sqrt{32 + 4}} \\ = \sqrt{15 - \sqrt{36}} \\ = \sqrt{15 -6} \\ = \sqrt{9} \\ = 3$