已知4x+y-4x+6y+10=0,求4x-12xy+9y的值
已知4x+y-4x+6y+10=0,求4x-12xy+9y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x的平方+y的平方-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
已知4x^2+y^2-4xy-12x+6y+9=0,求x,y的关系
已知x+4y-6x+4y+10=0,求xy的值
已知x+9y-4x+6y+5=0 求xy的值
已知非零有理数x,y满足x²-4xy+4y²=0,求x-y/x+y-y-x/x+y的值.
已知x.x+y.y-4x+6y+13=0,分别求xy和x.x+y.y的值
已知x^3+xy^2+x+x^2y+y^3+y=0,求5x-6y/3x+4y的值.
已知x²+y²-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
已知4x²+y²-4x+6y+10=0, 求4x²-12xy+9y²的值
已知4x^2+y^2-4x+6y+10=0,求4x^2-12xy+9y^2的值