Question

prove that the sum of 5+4root3 and 5-4 root3
$(5 + 4 \sqrt{3}$
and
$5 - 4 \sqrt{3}$

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Answer 1

$(5 + 4 \sqrt{3} ) + (5 - 4 \sqrt{3} ) \\ \\ = > 5 + 4 \sqrt{3} + 5 - 4 \sqrt{3} = 10$