若x^2+y^2+6x-4y+13=0,求x^-y的值
x^2+y^2+4x-6y+13=0,求x^y的值
已知x*x-4xy+4y*y=0 求[2x(x+y)-y(x+y)]/(4x*x-4xy+y*y)的值?
已知:4x^2+y^2-4x-6y+10=0,求y/x-x/y的值
若x²-4x+y²+6y+13=0,求2x-y的值
若x平方+y平方-4x-6y+13=0,求(x-y)负2次方的值.
已知:x^2+y^2+4x-6y+13=0,求x^y值.
若实数x、y满足x^2+4x+y^2-6y+13=0,求x,y的值
若实数x、y满足x^2+4x+y^2-6y+13=0,求x 、y的值.
若整数x、y满足x^2 +4x+y^2 -6y+13=0,求x、y的值.
若|x+y-1|+(x-y-2)²=0,求代数式(x+2y)(x-2y)-(2x-y)(-y-2x)的值.
已知X.x+y.y-4x+2y+5=0,求4X.X-12X Y+9Y.y的值
若2x-y=0,求代数式[(x^2+y^2)-(x-y)^2+2y×(x-y)]÷4y的值