根扮历隐号12-(3倍根号1/2+根号27)+根号50=2根号3-3/2根号2-3根号3+5根号2=-根号3+7/2根号2(根号12+2倍根号烂肢1/2)-(根号18-5倍根号1/3)=2根号3+根号2-3根号2+5/3根号3=8/3根号3-2根号2根号18-5倍根号0.72+根号4又1/2-根号1/2=3根号2-3根号2+3/2根号2-1/2根厅厅号2=根号2