RT x^2+2x+y^2-6y+10=0 求x^2y^3
已知X-Y/X+Y=3,求代数式2(x-y)/X+Y-3X+Y/X+Y
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
x²-2x+y²+6y+10=0,求—9(x+y)²+(3x-2y)(2y+3x)的值
已知x^2+y^2--6x--2y+10=0,求x+y/x--y
已知x^2-2x+y^2+6y+10=0,求分式x-y/x+y的值
已知x^2+2x+y^2-6y+10=0 求(x+y)^2
已知:4x^2+y^2-4x-6y+10=0,求y/x-x/y的值
X^2+y^2-2x+6y+10=0,求x+y的值
如果|x+y+z-6|+|2x+3y-z-12|+|2x-y-z|=0求x,y,
已知实数x, y满足x²+y²-2x+6y+10=0,求y∧-x.
x方-2x+y方+6y+10=0 求x,y
已知xy=-2,x-y=3,求(x+y)(x-y)-y^2+(x-y)^2-(6x^2y-2xy^2)÷2y