若x>0,y>0,且√x(√x+√y)=3√y(√x+5√y),求2x+2√x*√y+3y/x-√x*√y+y
已知:x*x+√3y=√5,y*y+√3x=√5,且x≠y,求 y/x+x/y
若x>0,y>0,且√x(√x+√y)=3√y(√x+5√y),求(2x+2√xy+3y)/(x-√xy+y)的值.
|x-2y|+√3x-4y =0求x y值
当x>0,y>0且√x(√x+√y)=3√y(√x+5√y),求2x+(√xy)+3y/x+(√xy)-y的值
若实数x,y满足x^2+y^2-4x-2y+5=0,求(√x+y)/[√(8y-2x)]
|2x+y+1|+√2y+3x=0则x.y=
√x(√x+2√y)=√y(6√x+5√y,求x-3√xy+2y/x+√xy-6y
已知√x方-y +√2x+y=0,求x+y的值
2x²+1/2y²-2x-3y+5=0,求(2x√9x-y²√x/y³)-(√1
已知x^2+y^2-4x-2y+5=0,求【2/3x√9x+y^2 √[x/y^2]】的值
若(3x-y+5)²+√2x-y+3=0,求x-y的值
若x、y都是实数,且y=√(x-3)+√(3-x)+8 求x+y的值