2 câu trả lời
`3\sqrt[32]-2\sqrt{50}-\sqrt{1/2}+7/\sqrt{2}`
`=12\sqrt[2]-10\sqrt{2}-\sqrt{2}/2+{7\sqrt{2}}/2`
`=12\sqrt[2]-10\sqrt{2}-(\sqrt{2}/2-{7\sqrt{2}}/2)`
`=2\sqrt[2]-{-6\sqrt{2}}/2`
`=2\sqrt[2]+3\sqrt[2]`
`=5\sqrt[2]`
3.4$\sqrt{2}$ -2.5$\sqrt{2}$ -$\frac{\sqrt{2}}{2}$ +$\frac{7\sqrt{2}}{2}$
= 2$\sqrt{2}$ +3$\sqrt{2}$
= 5$\sqrt{2}$
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