求x-xy+y分之3x+xy+3y 其中xy分之x+y=3
来源:学生作业帮 编辑:搜搜做题作业网作业帮 分类:数学作业 时间:2024/06/25 07:24:52
求x-xy+y分之3x+xy+3y 其中xy分之x+y=3
![求x-xy+y分之3x+xy+3y 其中xy分之x+y=3](/uploads/image/z/18541257-33-7.jpg?t=%E6%B1%82x-xy%2By%E5%88%86%E4%B9%8B3x%2Bxy%2B3y+%E5%85%B6%E4%B8%ADxy%E5%88%86%E4%B9%8Bx%2By%3D3)
xy分之x+y=3
x+y=3xy
x-xy+y分之3x+xy+3y
=[3(x+y)+xy]/[(x+y)-xy]
=(9xy+xy)/(3xy-xy)
=10xy/2xy
=5
x+y=3xy
x-xy+y分之3x+xy+3y
=[3(x+y)+xy]/[(x+y)-xy]
=(9xy+xy)/(3xy-xy)
=10xy/2xy
=5
已知X+Y分之XY=2,求-X+3XY-Y分之3X+5XY+3Y
(x+2y-3xy+2x+y-xy)-(-2-y+xy),其中x+y=2分之1,xy=-2分之1
已知x-y=4xy,求x-2xy-y分之2x+3xy-2y的值!
已知X+Y分之XY等于3,求-X+3XY-Y分之2X-3XY+2Y
已知y分之x=3,求x²-xy+y²分之x²+2xy-3y²
已知x+y分之xy=2,那么3x-5xy+3y分之3xy-x-y=
若x+y分之xy=2,则-x+3xy-y分之3x-xy+3y=多少?
已知2x-2y=xy,求代数式3x-4xy-3y分之xy的值
已知x-y分之xy= - 3分之1,求x-2xy-y分之2x+3xy-2y的值
当x=3,y=3分之1时,求代数出3xy-[2xy-2(xy-2分之3xy)+xy]+3xy的值
已知x-y=4xy且xy≠0,求代数式-x-2xy+y分之2x+3xy-2y的值
(-3分之1xy)的平方×[xy(2x-y)-2x(xy-y的平方)]