Question

√13-2√3
$( \sqrt{13 - 2 \sqrt{3) {}^{2} } }$
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Answer 1

$\sqrt{13 - 2 \sqrt{ {(3)}^{2} } } \\ = \sqrt{11 \sqrt{ {(3)}^{2} } } \\ = \sqrt{11 \times 3} \: \: \: \: \: \: \\ = \sqrt{33} \: \: \: \: \: \: \: \: \: \: \: \: \: \:$

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Answer 2

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