(根号18-根号0.5+2根号1/3)-(根号1/8-根号 12)
问题描述:
(根号18-根号0.5+2根号1/3)-(根号1/8-根号 12)
答
(√18-√0.5+2√1/3)-(√1/8-√12)
=[3√2-(√2)/2+(2√3)/3]-[(√2)/4-2√3]
=3√2-(√2)/2+(2√3)/3-(√2)/4-2√3
=(3-1/2-1/4)√2+(2/3-2)√3
=(9√2)/4-(4√3)/3
答
(根号18-根号0.5+2根号1/3)-(根号1/8-根号 12)
=√18-√0.5+2√1/3-√1/8+√12
=3√2-√2/2+2√3/3-√2/4+2√3
=(3-1/2-1/4)√2+(2/3+2)√3
=9√2/4+8√3/3
楼上的错了