求解初2数学题谢谢乙知m=1/3,n=1/27,求(m
乙知m=1/3,n=1/27, 求(m-n)/(√m-√n)+(m+4n-4√mn)/(√m-2√n)值
m=9n (m-n)/(√m-√n)+(m+4n-4√mn)/(√m-2√n) =(8n+26n-24n)/2√n =10n/2√n =5√n =5√3/9