已知4x²+y²-4x-6y+10=0,求[(2/3)x√(9x)+y²√(x/y
已知4x²+y²-4x-6y+10=0,求[(2/3)x√(9x)+y²√(x/y
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4x²+y²-4x-6y+10=0,求(2/3√9x +y²√x/y³)-(
已知x/y=2,求2x(x+y)-y(x+y)/4x²-4xy+y²
已知4x²+y²-4x-6y+10=0,求(2x/3*√(9x)+y²√(x/y³
已知x²+y²+13-4x+6y=0,求(2x-y)²-2(2x-y)(x+2y)+(x+
已知x²+y²-8x+6y+25=0,求(x-y+4xy/x-y)(x+y-4xy/x+y)
已知x²+y²+5=2x+4y,求【2x²-(x-y)(x-y)】【(x+y-1)(x-y
已知x,y满足x²+y²-4x+6y+13=0则(3x+y)²-(3x+y)(3x-y)的
已知x²+y²-2x+4y+5=0,求x+y
已知x²+4x+y²+6y+13=0,求x-y+(2y²/x+y) 请在10;20分前回答