Question

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$\sqrt{81 + \sqrt{100 + 236} }$
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Answer 1

$\sqrt{81\sqrt{100+236} } =$

$\sqrt{81\sqrt{336} } =$

$\sqrt{81\times4\sqrt{21} } =$

$\sqrt{324\sqrt{21} } =$

$\sqrt{324} \sqrt{\sqrt{21} } =$

$18\sqrt{\sqrt{21} }=$

$18\times2^\frac{1\times1}{2\times2} =$

$18\sqrt[2\times2]{21} =$

$\checkmark \boxed{\boxed{18\sqrt[4]{21} }}\checkmark$