2次根式计算(1/3根号45+24/根号8-根号50)-[18(根号1/2)-4(根号125)]
问题描述:
2次根式计算(1/3根号45+24/根号8-根号50)-[18(根号1/2)-4(根号125)]
答
原式=1/3乘以(3根号5)+24/2根号2-5根号2-18乘以(根号2)/2+4乘以(5根号5)
=根号5+6根号2-5根号2-6根号2+20根号5
=21根号5-5根号2