|根号(3x4x4)-根号(4x3x3)|+|根号(3x2x2)-根号(2x3x3)|
=|根号(48)-根号(36)|+|根号(12)-根号(18)|
|4根号3-3根号4|+|2根号3-3根号2|
=4根号3-3x2-(2根号3-3根号2)
=2根号3+3根号2-6