[2x-(x+y)(x-y)](yy-xx)

x y x+yy x+y xx+y x y x y x+yy x+y xx+y x y [2x-(x+y)(x-y)](yy-xx) (x-y)(x+y)(xx-yy)=? XX-YY/(X-Y)(X-Y)约分 xx-yy-x-y 因式分解 求解：X+YY'=X(X^2+Y^2) 已知2x=3y,求xy/xx+yy-yy/xx-yy的值 用行列式性质计算下列行列式x y x+yy x+y xx+y x y 因式分解：xx-2x-2yy+4y-xy 求微分方程yy'+(y')^2=2x的通解, 分解因式：x-y-xx+2xy-yy+2 y*2对x的求导如何得出2yy' 求微分方程(y-xy')/(x+yy')=2的通解 xx-2xy+yy+4x-4y+4 xx+4xy+yy-2x-4y+6 因式分解 xx+12*12=yy(y-x=2) xy+yy=10,x/2+y/3=6