Question

please answer................

Answer 1

I hope it will help you

Answer 2

$\sqrt{21 + \sqrt{11 + \sqrt{25} } } \: \: \times {((3 \times 8 - 4) \div 4)}^{ - 1} \\ \\ = \sqrt{21 + \sqrt{11 + 5} } \: \: \times {( \frac{24 - 4}{4} )}^{ - 1} \\ \\ = \sqrt{21 + \sqrt{16} } \: \: \times {( \frac{20}{4} )}^{ - 1} \\ \\ = \sqrt{21 + 4} \: \: \times {(5)}^{ - 1} \\ \\ = \sqrt{25} \times \frac{1}{5} \\ \\ = 5 \times \frac{1}{5} \\ \\ = 1$