Question

$siplify (3 + \sqrt{3})(2 + \sqrt{2} )$
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Answer 1

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$(3 + \sqrt{3} )(3 - \sqrt{3}) \\ \\ = 3(3 - \sqrt{3}) + \sqrt{3} (3 - \sqrt{3}) \\ \\ = 9 - 3 \sqrt{3 } + 3 \sqrt{3} - 3 \\ \\ = 9 - 3 \\ = 6$