Đáp án:
`(frac{sqrt{6}-sqrt{2}}{1}-sqrt{3}-frac{5}{sqrt{5}}):frac{1}{sqrt{15}}-sqrt{2}`
`=frac{(sqrt{6}-sqrt{2})sqrt{5}}{sqrt{5}}-frac{sqrt{15}}{sqrt{5}}-frac{5}{sqrt{5}}:frac{1}{sqrt{15}}-sqrt{2}`
`=(frac{sqrt{30}-sqrt{10}}{sqrt{5}}-frac{sqrt{15}}{sqrt{5}}-frac{5}{sqrt{5}}):frac{1}{sqrt{15}}-sqrt{2}`
`=(frac{(sqrt{30}-sqrt{10}-sqrt{15}-5)}{sqrt{5}}).sqrt{15}-sqrt{2}`
`=(frac{sqrt{5}(sqrt{6}-sqrt{2}-sqrt{3}-sqrt{5})}{sqrt{5}}).sqrt{15}-sqrt{2}`
`=(sqrt{6}-sqrt{2}-sqrt{3}-sqrt{5})sqrt{15}-sqrt{2}`
`=3sqrt{10}-sqrt{30}-3sqrt{5}-5sqrt{3}-sqrt{2}`
$\text{*Khiên}$
Giải thích các bước giải:
