Đáp án:
`(3+2sqrt6-sqrt33)(sqrt22+sqrt6+4)`
`= 3(sqrt22+sqrt6+4)+2sqrt6(sqrt22+sqrt6+4)-sqrt33(sqrt22+sqrt6+4)`
`= 3sqrt22+3sqrt6+12+2sqrt132+12+8sqrt6-sqrt726-sqrt198-4sqrt33`
`= 3sqrt22+3sqrt6+12+4sqrt33+12+8sqrt6-sqrt726-sqrt198-4sqrt33`
`= 3sqrt22+3sqrt6+12+12+8sqrt6-11sqrt6-3sqrt22`
`= 24`