XY(XY-X2)乘以------------X-Y
XY(XY-X2)乘以------------X-Y
(xy-x^2)乘以(xy)/(x-y)
因式分解x2+y-xy-x
因式分解 x2(x+1)-y(xy+x)
已知x2+xy=12,xy+y2=15,求(x-y)的负4次方乘以(x+y)的平方
已知2+4y2-4x+4y+5=0,求x四次方-y的四次方/xy乘以2x2-xy/xy-y2除以(y分之x2+y2)2
(xy-x²)除以xy分之x²-2xy+y²乘以x²分之x-y
二元二次方程解法如x2+xy+y=1x2+xy+x=6
已知实数x,y满足x2+xy+y2=3,则x2-xy+y2的最小值
正数xy满足x2-y2=2xy,求x+y分之x-y的值
因式分解X2(X+1)-Y(XY+X)=
计算:(x的平方y)^4乘以xy^-3