Giải thích các bước giải:
ĐKXĐ : `x>0;y>0`
`(xsqrtx+ysqrty)/(sqrtx+sqrty)-(xsqrty+ysqrtx)/(sqrt(xy))`
`=(sqrt(x^3)+sqrt(y^3))/(sqrtx+sqrty)-(sqrt(xy).(sqrtx+sqrty))/(sqrt(xy))`
`=((sqrtx+sqrty)(x-sqrt(xy)+y))/(sqrtx+sqrty)-(sqrtx+sqrty)`
`=x-sqrt(xy)+y-sqrtx-sqrty`