xx-yy-x-y 因式分解
xx-yy-x-y 因式分解
(x-y)(x+y)(xx-yy)=?
XX-YY/(X-Y)(X-Y)约分
x y x+yy x+y xx+y x y
已知2x=3y,求xy/xx+yy-yy/xx-yy的值
((xx+yy)/y-2y)/(1/y-1/x)^(1/(xx-yy))
初二数学因式分解已知x-y+1的绝对值与xx+8x+16互为相反数,求xx+2xy+yy的值
已知xx+yy+4x-6y+13=0,求(xx-2x)/xx+3yy的值.
已知x(x+1)-(xx+y)=3,求(xx+yy)/2-xy的值
x(x+1)-(xx+y)=-3,求(xx+yy)/2-xy的值
因式分解(x+y)^3+2xy(1-xx-y)-1
已知14(XX+YY+ZZ)=(X+2Y+3Z)^2,求X:Y:Z