若1/x-1/y=3,则2x+3xy-2y/x-y-2xy的值是多少?
来源:学生作业帮助网 编辑:作业帮 时间:2024/11/14 05:26:33
若1/x-1/y=3,则2x+3xy-2y/x-y-2xy的值是多少?
若1/x-1/y=3,则2x+3xy-2y/x-y-2xy的值是多少?
若1/x-1/y=3,则2x+3xy-2y/x-y-2xy的值是多少?
1/x-1/y=3
(y-x)/(xy)=3
y-x=3xy
x-y=-3xy
(2x+3xy-2y)/(x-y-2xy)
=[2(x-y)+3xy]/[(x-y)-2xy]
=(-6xy+3xy)/(-3xy-2xy)
=(-3xy)/(-5xy)
=3/5
若x-y=4,xy=1,则(2x+y-2xy)-(3x+2y+xy)-(4xy+3y-5x)=
若1/x-1/y=2,求3x-2xy-3y/x-xy-y的值3x-2xy-3y/x-xy-y 不好意思,是3x-2xy-3y/x-2xy-y
已知xy/x+y=1/2,则代数式3x-5xy+3y/-x+3xy-y=
若1/x+1/y=2,则(2x-xy+2y)÷(3x+5xy+3y)
若1/X-1/Y=3,则2X+XY-2Y/X-2XY-Y=?
若1/x-1/y=2,则(3x+xy-3y)/(x-xy-y)的值为?
若x-y=4,xy=1,求(-2xy+2x+3y)-(3xy+2y-2x)-(x+4y+xy)的值
若x^2-3x=1,则x^2y-3xy-y
若x+y=-1,则x^4+5x^3y+x^2y+8x^2y^2+xy^2+5xy^3+y^4=( )若x+y=-1,则x^4+5x^3y+x^2y+8x^2y^2+xy^2+5xy^3+y^4=( )
若实数x,y满足1/x-1/y=5,则分式3x-2xy-3y/x+xy-y的值等于?
已知1/x=1/y=6,则3x-2xy+3y/3xy+x+y=?已知1/x+1/y=6,则3x-2xy+3y/3xy+x+y=?
若1/x+1/y=3,4y-2xy-4x/3x+xy-3x等于多少
若x+y分之xy=2,则-x+3xy-y分之3x-xy+3y=多少?
若xy/x+y=2,则3x-5xy+3y/-x+3xy-y=?/是分之
若x+y分之xy=2,则-x+3xy-y分之3x-xy+3y=多少?
若xy/x+y=2,则3x-xy+3y/-x+3xy-y=
(x+2y-3xy)-(-2x-y+xy),其中x+y=1/2,xy=-1/2
若1/x-1/y=1/3,求(2x+3xy-2y)/(x-3xy-y)