已知(√x-y-4)+|x-2y-5|=0,则√x+y²=____.³√x²-y²
已知(√x-y-4)+|x-2y-5|=0,则√x+y²=____.³√x²-y²
已知x²+y²-2x+4y+5=0,则(x+y)2012次方=____.
已知4x²+y²-4x-6y+10=0求(2/3x(√9x)+(y²√x/y³)
已知4x²+y²-4x-6y+10=0,求(2/3√9x+y²√x/y³)-(x
已知x²+4x+y²-2y+5=0,则x+y=
已知x²+y²+5=2x+4y,求【2x²-(x-y)(x-y)】【(x+y-1)(x-y
已知4x²+y²-4x-6y+10=0,求(2/3√9x +y²√x/y³)-(
已知4x²+y²-4x-6y+10=0,求[(2/3)x√(9x)+y²√(x/y
已知x²+y²-2x+4y+5=0,求x+y
已知x²+4x+y-2y+5=0求x+2y
已知x/y=2,求2x(x+y)-y(x+y)/4x²-4xy+y²
已知x²+y²-4x-2y+5=0,求代数式[(√x-√y)²+4√xy]/(x+√xy)