Question

Find V41-V21+ V19-vo
$\sqrt{41 - \sqrt{21 + \sqrt{19 - \sqrt{9} } } }$
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Answer 1

$= \sqrt{41 - \sqrt{21 \sqrt{19 - \sqrt{9} } } } \\ = \sqrt{41 - \sqrt{21 + \sqrt{19 - 3} } } \\ = \sqrt{41 - \sqrt{21 + \sqrt{16} } } \\ = \sqrt{41 - \sqrt{21 + 4} } \\ = \sqrt{41 - \sqrt{25} } \\ = \sqrt{41 - 5} \\ = \sqrt{36} \\ = \frac{ + }{ } 6$

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