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$2\sqrt{2+\sqrt{3}}=\sqrt{2}+\sqrt{6}$

Lionel Messi · Answer 1 · 8/4/2016 1:42:59 PM

$2\sqrt{2+\sqrt{3}}=\sqrt{2}.\sqrt{4+2\sqrt{3}}$

$=\sqrt{2}.\sqrt{3+2\sqrt{3}+1}$

$=\sqrt{2}.\sqrt{(\sqrt{3}+1)^2}$

$=\sqrt{2}.(\sqrt{3}+1)=\sqrt{6}+\sqrt{2}$

Trả lời 04-08-16 01:42 PM

Lionel Messi
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Giống bài kia – Kaito kid 04-08-16 01:45 PM

bị xóa vì bị trùng bởi ๖ۣۜJinღ๖ۣۜKaido 04-08-16 03:07 PM