3 √32 - 2 √50 - √ $\frac{1}{2}$ + $\frac{7}{√2}$

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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