解:﹙√12-√1/2-2√1/3﹚-﹙√1/8-√18﹚ =2√3-√2/2-2/3 √3-√2/4+3√2 =4/3 √3+9/4 √2
解:原式=2√3-√2/2-2/3 √3-√2/4+3√2 =4/3 √3+9/4 √2