Đáp án+Giải thích các bước giải:
`a,(\sqrt[27]-4\sqrt[3]+\sqrt[75]):\sqrt[3]`
`=(3\sqrt[3]-4\sqrt[3]+5\sqrt[3]):\sqrt[3]`
`=4\sqrt[3]:\sqrt[3]=4`
`b.3\sqrt[1/3]-∛27-2/(2+\sqrt[3])`
`=3.\sqrt[3]/3-3-(2(2-\sqrt[3]))/(4-3)`
`=\sqrt[3]-3-4+2\sqrt[3]`
`=3\sqrt[3]-7`
`c,\sqrt[(\sqrt[3]-2)^2] - (4\sqrt[3]-3)/(\sqrt[3])`
`=2-\sqrt[3]-(\sqrt[3](4-\sqrt[3]))/(\sqrt[3])` (vì `\sqrt[3]-2<0`)
`=2-\sqrt[3]-4+\sqrt[3]`
`=-2`
