作业帮1.已知x/y=1/2,则x^2-3xy+2y^2的值为?2.m^3-m-2=0,则(m^3/m+2)-[(m^3-m)/2]=?
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/15 04:26:51
![1.已知x/y=1/2,则x^2-3xy+2y^2的值为?2.m^3-m-2=0,则(m^3/m+2)-[(m^3-m)/2]=?](/uploads/image/z/10253571-51-1.jpg?t=1.%E5%B7%B2%E7%9F%A5x%2Fy%3D1%2F2%2C%E5%88%99x%5E2-3xy%2B2y%5E2%E7%9A%84%E5%80%BC%E4%B8%BA%3F2.m%5E3-m-2%3D0%2C%E5%88%99%28m%5E3%2Fm%2B2%29-%5B%28m%5E3-m%29%2F2%5D%3D%3F)
x10HC H{
ѥ L8y8FkP?*${uia0`2λr[F*ck
3
|sLr-g:`'?~ nN"zkŘ&˦8@T_őe,&_]A!#dMH@HH "dNy3h8
V !
1.已知x/y=1/2,则x^2-3xy+2y^2的值为?2.m^3-m-2=0,则(m^3/m+2)-[(m^3-m)/2]=?
1.已知x/y=1/2,则x^2-3xy+2y^2的值为?
2.m^3-m-2=0,则(m^3/m+2)-[(m^3-m)/2]=?
1.已知x/y=1/2,则x^2-3xy+2y^2的值为?2.m^3-m-2=0,则(m^3/m+2)-[(m^3-m)/2]=?
x/y=1/2,y=2x
x^2-3xy+2y^2=(y-x)(2y-x)=3x^2
m^3-m-2=0,m^3＝m＋2,m^3-m＝2
(m^3/m+2)-[(m^3-m)/2]=1－1＝0
x^2-3xy+2y^2 = x^2 - 6x^2 + 8x^2 = 3x^2
m^3 = m+2
==> (m^3/m+2)-[(m^3-m)/2] = [(m+2)/m+2] - [2/2] = [3+2/m] - 1 = 2 + 2/m
已知xy/x+y=1/2,则代数式3x-5xy+3y/-x+3xy-y=
已知x+y=1,xy=-2,则x²y+xy²-2xy
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=?
已知1/x=3+1/y,则(2x-5xy-2y)/(y+3xy-x)=_______.
已知1/x+1/y=3,则2x-3xy+2y/x+xy+y=谢谢了,
已知1/x-1/y=-3,则x+3xy-y/3x-2xy-3y=
已知1/x-1/y=5,则2x+3xy-2y/y+2xy-x
已知2/X-1/Y=3,则(X-2Y-XY)/(5XY+6Y-3X)=?
已知2/x-1/y=3,则(2y-x+4xy)/(3x-6y-5xy)=?
已知1/x-1/y=-3,则x+5xy-y/3x-2xy-3y=
已知1/X+1/Y=6,则3X-2XY+3y/3XY+X+Y=多少
已知1/x减1/y=-3,则(2x+xy-2y)/x-xy-y的值为
已知1/X-1/Y=5 ,则x-2xy-y/4x+3xy-4y
已知x+xy+y=3,则(3x+2xy+3y)/(2x+xy+2y)=
已知x-y=3xy,则2x+3xy-2y除以x-2xy-y=?
已知x-y=3xy,则2x+3xy-2y/x-2xy-y=
已知3/(x-y)=1/xy 求(-x-2xy+y)/ (2x+3xy-2y)
已知xy/x+y=3,则代数式2x-7xy+2y/-x+xy-y的值是多少?