Question

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Answer 1

${(7 + \sqrt{6}) }^{2} = {7}^{2} + 2 \times (7 )\times (\sqrt{6} ) + { (\sqrt{6} )}^{2}$

$( {7 + \sqrt{6} })^{2} = 49 + 14 \sqrt{6} + 6$

${(7 + \sqrt{6}) }^{2} = 55 + 14 \sqrt{6}$