Question

$\sqrt{4 + \sqrt{21 + \sqrt{5 + \sqrt{121 = } } } }$
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Answer 1

Answer:

3

Step-by-step explanation:

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Answer 2

We have,

$\quad \sqrt{4 + \sqrt{21 + \sqrt{5 + \sqrt{121} } } } \\ \\ = \sqrt{4 + \sqrt{21 + \sqrt{5 + 11} } } \\ \\ = \sqrt{4 + \sqrt{21 + \sqrt{16} } } \\ \\ = \sqrt{4 + \sqrt{21 + 4} } \\ \\ = \sqrt{4 + \sqrt{25} } \\ \\ = \sqrt{4 + 5} \\ \\ = \sqrt{9} \\ \\ = \bf 3 \red{ \Longleftarrow} \green{ \bf \: answer}$
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