Question

Answer the question only who knows the full explaination not only the answer.
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Answer 1

Answer:

$( \sqrt{2} + 2) {}^{2}$

$( \sqrt{2} ) {}^{2} + (2) {}^{2} + 2( \sqrt{2})(2)$

$= 2 + 4 + 4 \sqrt{2}$

$= 6 + 4 \sqrt{2}$