x,y满足(10y-3x)/(3x-y)=2 且x大于0求(3x^2-2y^2)/(5y^2-x^2)=
x,y满足(10y-3x)/(3x-y)=2 且x大于0求(3x^2-2y^2)/(5y^2-x^2)=
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
如果分式3x-6y/x+y=0,那么x,y 应满足 A、x=2y B、x≠-y C、x=2y且x≠-y D、x=2y且y
若x大于y大于0,且x+2y=3,求1/x+1/y的最小值 )
已知X-Y/X+Y=3,求代数式2(x-y)/X+Y-3X+Y/X+Y
已知x、y均为实数,且满足xy+x+y=17,x^2y+y^2x=66,求x^4+x^3y+x^2*y^2+y^3x+y
简单的线性规划题,设Z=2y-x,满足X,y:y小于等于x,x+y大于等于2,y大于等于3x-6
如果x,y表示有理数,且x、y满足条件,|x|=5,|y|=2.|x-y|=y-x,求:x+2y的值.
已知实数x.y满足根号(x+y-8)+根号(8-x-y)=根号(3x-y-4)+根号(x-2y+7),求x,y
已知X、Y满足2X-7Y=3M,X+2Y=4m+5,且X+Y=0,求M的值
已知x.y满足2x-y=3m,x+2y=4m+5,且x+y=0,求m的值
已知x,y满足2x-y=3m,x+2y=4m+5,且x+y=0,求m的值