2 câu trả lời
`#huy`
`3\sqrt{2}-\sqrt{8}+\sqrt{50}-4\sqrt{32}`
`=3\sqrt{2}-\sqrt{2^2 . 2}+\sqrt{5^2 . 2}-4\sqrt{4^2 . 2}`
`=3\sqrt{2}-2\sqrt{2}+5\sqrt{2}-4.4\sqrt{2}`
`=3\sqrt{2}-2\sqrt{2}+5\sqrt{2}-16\sqrt{2}`
`=(3-2+5-16).\sqrt{2}`
`=-10\sqrt{2}`
`3\sqrt{2}-\sqrt{8}+\sqrt{50}-4\sqrt{32}`
`=3\sqrt{2}-2\sqrt{2}+5\sqrt{2}-4\sqrt{32}`
`=3\sqrt{2}-2\sqrt{2}+5\sqrt{2}-16\sqrt{2}`
`=-10\sqrt{2}`
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