已知有理数x、y满足(x²+y²+2)(x²+y²-1)=0,则x²+
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.
已知实数x,y满足x²+y²-xy+2x-y+1=0 求x y
已知有理数x,y满足xy=4,x+y=7,则x²y+xy²=()?
已知有理数xy满足(x²+y²)(x²+y²-1)-6=0,则x²+y
已知有理数X.Y满足|2X+1|+(1/2Y-6)²=0,求代数式2X²Y-1/3XY²的
已知x,y满足x²+y²-4x+6y+13=0则(3x+y)²-(3x+y)(3x-y)的
已知有理数x,y,z满足(x-z-2)²+(3x-6y-7)+|3y+3z-4|=0,则xyz=
已知X,Y为有理数且它们满足根号下X-1+(Y-2)²=0,求(X-Y)2013次方.
已知实数x, y满足x²+y²-2x+6y+10=0,求y∧-x.
有理数x,y满足|x+y-3|+(x-y+1)²=0,求(xy²)²X(x²y)
已知实数x、y满足x²+y²+4x-6y+13=0
如下面如果有理数x,y满足 (x-1)² + |x-12y+1| =0,则x²+y²=__