已知(x-2)2+|y+1|=0,求X,Y的值

已知(x-2)+√y-x+1=0,求x+y的平方根

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已知x-y/x=x/x-2y(y不等于0),求x:y的值

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已知x-2y=0,求y/(x^2-y^2)除以1/(x-y)的值

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已知实数x,y满足方程x^2+y^2-4x+1=0,(1)求,Y/x的最大值和最小值 (2)求y-x

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x>0 y>0已知x+2y=1求 1/x+y/1最小值

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已知x>0,y>0,2/x+5/y=1,求x+y最小值

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已知x>y>0,xy=1,求x^2+y^2/x-y的最小值.

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已知(x+y)×(x+y+2)-8=0,求x+y的值

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已知|2x-3y|+|3x-y-1|=0,求x,y的值.

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已知x^2+y^2-8x+12y+52=0 ,求1/2x-1/x-y(x-y/2x-x^2+y^2)

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已知x^2+y^2-8x+12y+52=0 ,求1/2x-1/x-y(x-y/2x-x^2+y^2)

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已知实数x、y满足|2x-y+1|+3根号3x-2y+4=0,求代数式[(x-y)/(x-2y)]/(x的平方-2y)/[(x的平方-y的平方)/x的已知实数x、y满足|2x-y+1|+3根号3x-2y+4=0,求代数式[(x-y)/(x-2y)]/(x的平方-2y)/[(x的平方-y的平方)/(x的

已知实数x、y满足|2x-y+1|+3根号3x-2y+4=0,求代数式[(x-y)/(x-2y)]/(x的平方-2y)/[(x的平方-y的平方)/x的已知实数x、y满足|2x-y+1|+3根号3x-2

已知x(x-1)-(x-y)+2=0,求代数式2分之x+y-xy的值

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已知:13x^2-6xy+y^2-4x+1=0,求(x+y)^2013*x^2011

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已知(x+y)(x+y-10)+25=0,且x-y=2,求x,y的值?

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已知实数x,y满足x²+y²-xy+2x-y+1=0 求x y

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已知X,Y满足|X-Y-1|+(X+Y-3)^2=0求X,Y的值

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已知2x-y=0,求分式【1+(3*y*y*y/x*x*x-y*y*y)】/【1+(2y/x-y)】的值注:x*x*x-y*y*y=(x-y)*(x*x+xy+y*y)

已知2x-y=0,求分式【1+(3*y*y*y/x*x*x-y*y*y)】/【1+(2y/x-y)】的值注:x*x*x-y*y*y=(x-y)*(x*x+xy+y*y)已知2x-y=0,求分式【1+(

已知x²-4x+4+(y+x的绝对值)=0,求x²y-x²分之2x+x²÷y²-2y+1分之x²+4x+4另外还有一题:已知x-3y=0,求x²-2xy+y²分之2x+y×(x-y)的值.

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已知(1)X-Y+Z=0 (2)X+2Y-3Z=0 求X:Y:Z

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