设√x(√x-√y)=√xy+3y,求2x+3√xy-y/3x-y的值.

设√x(√x-√y)=√xy+3y,求2x+3√xy-y/3x-y的值. √x(√x+2√y)=√y(6√x+5√y,求x-3√xy+2y/x+√xy-6y 若x＞0,y＞0,且√x(√x+√y)=3√y（√x+5√y）,求（2x+2√xy+3y）/（x-√xy+y）的值. 当x>0,y>0且√x(√x+√y)=3√y(√x+5√y),求2x+(√xy)+3y/x+(√xy)-y的值 设x=1/√3-2,y=1/√3+2,求代数式x²+xy+y²/x+y的值 已知x+y=3,xy=6.求√x分之y+√y分之x的值 已知实数x,y满足x^2+√2y=√3,y^2+√2x=√3,求x+y和xy的值 1.若x-2√xy-3y=0 x>0求2x+y+√xy除以y-x-√xy 已知2X-3√xy-2y=0(x>0)求2x²+xy-9y²分之x²+4xy-16y
已知√x+y-3+绝对值xy+x+y-2l =0求x/y+y/x的值（初一） 若 |x^2-3xy-4y^2|+2√(x^2+4xy+4y^2-1)=0 求3x+6y的值 已知|x²-2xy-8y²|+2√x²-4xy+4y²-1=0,求3x+6y的值