等式变形x√y+y√x-√2003x-√2003y+√2003xy=2003怎么变形为(√xy-√2003)(√x+√y
(√xy -xy分之x+√xy)除以√xy -y分之x-y(x>0,y.0)
√xy/x+√xy/y怎么算
√x(√x+2√y)=√y(6√x+5√y,求x-3√xy+2y/x+√xy-6y
帮个忙啦 已知x+y=-6 xy=8 求√y/x+√x/y
解方程xy'=(√x^2-y^2)+y
若x、y为整数,√x(√x+√y)=3√y(√x+5√y),试求2x+(√xy)+3y除以x+(√xy)+y
已知x,y为正数,且√x(√x+√y)=3√y(√x+5√y),求(2x+√xy+3y)/(x+√xy-y)
设xy是有理数,且xy满足等式x+2y-√2y=17+4√2,试求(√x+y)2009次方
设xy是有理数,且xy满足等式x+2y-√2y=17+4√2,试求(√x+y)的2009次方
先化简再求值(6x√y/x +3/y*√xy^3)-(4x√x/y +√36xy) 已知X=3/2,y=27
√xy+y分之一+√xy+x分之一等于多少,
设xy为有理数,并且满足等式x +2y - √2 y = 17 + 4√2试求(√x+y)