已知x^2+10xy+25y^2-1=0,化简x^3+5x^2y+x^2..

已知:x>0,y>0,且x- 10√xy+25y=0,求2x+√xy+3y/x+√xy-y 已知实数xy,满足10x²-2xy+y²+6x+1=0,求x+y 已知x^2+10xy+25y^2-1=0,化简x^3+5x^2y+x^2.. 已知x+y=1,xy=-2,则x²y+xy²-2xy 1.已知x+y=-4,xy=3,求5（2分之1xy+2y）+[6x-(2xy+y-3x)]的值2.已知（x+3）^2+|x-y+10|=0求代数式5x^2y-[2x^2y-(3xy-xy^2)-3x^2]-2xy^2-y^2的值 已知x²-10x+25+|y-3|=0,求2xy+xy分之x²+x的值 已知实数xy满足x²﹢y²-xy+2x-y+1=0求xy 已知/X-Y-1/+(XY+3)的平方=0,求(-2XY+2X+3Y)-(3XY+2Y-2X)-(X+4Y+XY)的值!已知/X-Y-1/+(XY+3)的平方=0,求(-2XY+2X+3Y)-(3XY+2Y-2X)-(X+4Y+XY)的值急! 已知(x+1)²+|y-1|=0,求2(xy-5xy²)-(3xy²-xy)得值 已知x^2+y^2+x^2y^2-4xy+1=0 求(x-y)^2008-(xy)^2008 已知x+y=3,xy=-10,求（1）x平方-xy+y平方；（2）|x-y| 已知x+y=1,x>0,y>0,则2x+y/xy等于 已知x>y>0,xy=1,求x^2+y^2/x-y的最小值. 已知x-xy=10,xy-y=2,则x-y=（ ）,-2xy+x+y=（ ）. 已知X-XY-2Y=0求2X+3XY-Y/X-2XY+5Y 已知x-xy=20,xy-y=-10,则x-y=( ),x+y-2xy=( ). 已知x-xy=20,xy-y=-10,则x-y=?,x+y-2xy? 已知3/(x-y)=1/xy 求(-x-2xy+y)/ (2x+3xy-2y)