已知(x^2+3y^2)^2-2(x^2+3y^2)-8=0,求x^2+3y^2的值
已知X-Y/X+Y=3,求代数式2(x-y)/X+Y-3X+Y/X+Y
已知x-y/x+y=3,求代数式5(x-y)/x+y-x+y/2(x-y)
已知4x-2y=0,求x-y/3x+2y的值
已知|2x-3y|+|3x-y-1|=0,求x,y的值.
已知x-3y=0,求(2x+y)/(x^2-2xy+y^2)*(x-y)的值
已知x-3y=0,求(2x+y)/(x^2-2xy+y^2)*(x-y)的值.
已知x-3y=0,求(2x+y)(x-y)/x^2-2xy+y^2的值
已知x-3y=0,求2x+y/x-2xy+y乘(x-y)的值
已知y-2x=0,求3x²-2y²/(x+y)(x-y)的值
已知3x*+xy-2y*=0,求(x/y)-(y/x)-(x*+y*)/(xy)的值.*是平方
已知2x-y/x+2y=3,求2(2x-y)/x+2y-9(x+2y)/2x-y+3的值.
已知x+y分之x-y=2,求2x+2y分之x-y-3x-3y分之2x+2y的值