x+y=-5,xy=3,则-x^3y-xy^3+2x^2y^2等于
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/21 13:52:56
x)Ю5թ5y1S"θR2Xۨ"Ψ2'lV_`gCO?Ӟi5<ٱbaP.P1PS&XIT(mQ@Hi -j0ixy=T~O'
m:F@<ٽiҧō@juMJAfjCkli_\g
Kr*Ԕ
-+!.GXdA5AV
T/P&ӣ5tM2#Ics/ h
x*x+xy=3,xy+y*y=2,则x*x+2xy+y*y=________?
若xy/x+y=2,则3x-5xy+3y/-x+3xy-y=?/是分之
已知xy/x+y=1/2,则代数式3x-5xy+3y/-x+3xy-y=
若x-y=4,xy=1,则(2x+y-2xy)-(3x+2y+xy)-(4xy+3y-5x)=
已知x-y=3xy,且xy不等于0,则-3x+6xy+3y/(7x-5y)-9xy-(3x-y)
已知xy/x+y=2,则代数式3x-5y+8y/-x+3xy-y的值
f(xy,x-y)=x^2+3xy+y^2,则f(x,y)=?
x+y=-5,xy=3,则-x^3y-xy^3+2x^2y^2等于
已知1/x-1/y=-3,则x+5xy-y/3x-2xy-3y=
已知x-y=-3,xy=2则3x-5y-(x-3y-4xy)是多少
已知1/x-1/y=3,则(5x+xy-5y)/(x-xy-y) =9=
已知2/X-1/Y=3,则(X-2Y-XY)/(5XY+6Y-3X)=?
已知1/x=3+1/y,则(2x-5xy-2y)/(y+3xy-x)=_______.
已知2/x-1/y=3,则(2y-x+4xy)/(3x-6y-5xy)=?
x分之一减y分之一等于7,则x-3xy-Y分之3x+5xy-3y=?
已知1/X-1/Y=3 则(5X+XY-5Y)/(X-XY-Y)=?
若1/x+1/y=2,则(2x-xy+2y)÷(3x+5xy+3y)
已知1/x-1/y=3,则5x+xy-5y/x-xy-y等于