Đáp án và giải thích các bước giải:
`a)` `\sqrt[50]`
`=\sqrt[25.2]
`=\sqrt[25].\sqrt[2]`
`=5\sqrt[2]`
`b)` `\sqrt[1210]`
`=\sqrt[121.10]`
`=\sqrt[121].\sqrt[10]`
`=11\sqrt[10]`
`c)` `\sqrt[450]`
`=\sqrt[225.2]`
`=\sqrt[225].\sqrt[2]`
`=15\sqrt[2]`
`d)` `\sqrt[98a^3]`
`=\sqrt[49.2.a^3]`
`=\sqrt[49].\sqrt[2].\sqrt[a^3]`
`=7\sqrt[2].a\sqrt[a]`
`=7a\sqrt[2a]`
`e)` `\sqrt[72a^2b^3]`
`=\sqrt[36.2.a^2b^3]`
`=\sqrt[36].\sqrt[2].\sqrt[a^2].\sqrt[b^3]`
`=6ab\sqrt[2b]`
`f)` `\sqrt[0,27a^4b^2c]`
`=\sqrt[0,27].\sqrt[a^4].\sqrt[b^2].\sqrt[c]`
`=0,3\sqrt[3].a^2.b.\sqrt[c]`
`=0,3a^2b\sqrt[3c]`
