1) 根号下15×根号下48-根号下12×根号下×根号下27/4(2)(根号下m/2+根号下n/3) ( 根号下m/2-根号下n/3)

问题描述:

1) 根号下15×根号下48-根号下12×根号下×根号下27/4
(2)(根号下m/2+根号下n/3) ( 根号下m/2-根号下n/3)