Jawabanmu

2014-08-17T21:21:30+07:00
12√3 - √3x36 + 2√3x81
= 12√3 - 6√3 + 2x9√3
= 12√3 - 6√3 + 18√3
= 24√3
2014-08-17T21:21:37+07:00
12√3 - √108 + 2√243
41.5692193817