若根号-4x^2y^3=2xy根号-y则xy的取值需要满足什么条件
若根号-4x^2y^3=2xy根号-y则xy的取值需要满足什么条件
若根号x+根号y=4根号2,则满足条件的正整数xy共有
若x.y都是实数,且满足y=根号x-4 + 根号4-x + 1 ,求3(-xy+2x)-2(3x-y)的值
若实数x,y满足根号x-2 +(3-y)^2=0,则代数式xy-x的值为
若实数xy满足x≥y≥2,且2x²-xy-8x+2y+9=0,则根号xy的值
若实数x,y满足根号下(x+2)加根号下(y-根号下3)的平方=0,则xy的值是()
已知X—根号3XY-4Y=0,求(2X+3根号XY-2Y)/(3X-根号XY+Y)的值
已知正实数x y满足x-根号xy-2y=0求 x+3根号xy+2y/2x-2根号下xy-y
已知根号x(根号x-根号y)=根号xy+3y,求(3x-y)分之2x+3倍根号xy-y 的值
若x,y满足y=根号2x-3+根号3-2x+6,求xy的平方根?
已知y根号[(x-1)/y]=负根号[(x-1)y],求xy的取值范围,并化简根号[2xy-(x^2+1)y]
设xy是有理数,且xy满足x²+2y-根号2乘y=17+4根号2,求x-y的值