Giải thích các bước giải:
`a)`
`(\sqrt{32} - \sqrt{50} + \sqrt{8}) : \sqrt{2}`
`= (\sqrt{16 . 2} - \sqrt{25 . 2} + \sqrt{4 . 2}) : \sqrt{2}`
`= (4\sqrt{2} - 5\sqrt{2} + 2\sqrt{2}) : \sqrt{2}`
`= \sqrt{2} : \sqrt{2}`
`= 1`
`b)`
`(5\sqrt{48} - 3\sqrt{27} + 2\sqrt{12}) : \sqrt{3}`
`= (5\sqrt{16 . 3} - 3\sqrt{9 . 3} + 2\sqrt{4 . 3}) : \sqrt{3}`
`= (20\sqrt{3} - 9\sqrt{3} + 4\sqrt{3}) : \sqrt{3}`
`= 15\sqrt{3} : \sqrt{3}`
`= 15`
`c)`
`(\sqrt{9/2} + \sqrt{1/2} - \sqrt{2}) : \sqrt{2}`
`= (\sqrt{9/4 . 2} + \sqrt{1/4 . 2} - \sqrt{2}) : \sqrt{2}`
`= (3/2\sqrt{2} + 1/2\sqrt{2} - \sqrt{2}) : \sqrt{2}`
`= \sqrt{2} : \sqrt{2}`
`= 1`
