通分①3/4x^2y,-5/6y^2z,1/2xz^2②1/x^2y^2,1/x^2+xy③3/2(x+3),x/x^2
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/07/08 09:44:36
通分①3/4x^2y,-5/6y^2z,1/2xz^2②1/x^2y^2,1/x^2+xy③3/2(x+3),x/x^2-9,1/6-2x
①3/4x^2y,-5/6y^2z,1/2xz^2,最简公分母12x²y²z²
3/4x^2y=9yz²/﹙12x²y²z²﹚
-5/6y^2z,=﹣10x²z/﹙12x²y²z²﹚
1/2xz^2=6xy²/﹙12x²y²z²﹚
②1/x^2y^2,1/x^2+xy最简公分母x²y²﹙x+y﹚
1/x^2y^2,=﹙x+y﹚/[x²y²﹙x+y﹚]
1/x^2+xy=xy²/[x²y²﹙x+y﹚]
③3/2(x+3),x/x^2-9,1/6-2x最简公分母2﹙x+3﹚﹙x-3﹚
3/2(x+3)=﹙3x-9﹚/[2﹙x+3﹚﹙x-3﹚]
x/x^2-9=2x/[2﹙x+3﹚﹙x-3﹚]
1/6-2x=﹙﹣x-3﹚/[2﹙x+3﹚﹙x-3﹚]
3/4x^2y=9yz²/﹙12x²y²z²﹚
-5/6y^2z,=﹣10x²z/﹙12x²y²z²﹚
1/2xz^2=6xy²/﹙12x²y²z²﹚
②1/x^2y^2,1/x^2+xy最简公分母x²y²﹙x+y﹚
1/x^2y^2,=﹙x+y﹚/[x²y²﹙x+y﹚]
1/x^2+xy=xy²/[x²y²﹙x+y﹚]
③3/2(x+3),x/x^2-9,1/6-2x最简公分母2﹙x+3﹚﹙x-3﹚
3/2(x+3)=﹙3x-9﹚/[2﹙x+3﹚﹙x-3﹚]
x/x^2-9=2x/[2﹙x+3﹚﹙x-3﹚]
1/6-2x=﹙﹣x-3﹚/[2﹙x+3﹚﹙x-3﹚]
xy/x+y=1,yz/y+z=2,xz/x+z=3求x,y
三元二次方程组(XY+X)/(X+Y+1)=2(XZ+2X)/(X+Z+2)=3(Y+1)(Z+2)/(Z+Y+3)=4
(2X+Z-Y)/(X^2-XY+XZ-YZ)-(Y-Z)/(X^2-XY-XZ+YZ)
如果1=xy/x+y,2=yz/y+z,3=xz/x+z,则x的值?
化简(2x-y-z/x^2-xy-xz+yz)+(2y-x-z/y^2-xy-yz+xz)+(2x-x-y/z^2-xz
x-3=y-2=z-1,求x^2+y^2+z^2-xy-yz-xz的值
以知X:Y=2:3,Y:Z=1:2,求2x²+3xy+5y²/x²-2xz+z²
已知x+y+z=3,xy+yz+xz=-1,xyz=2,求x^2y^2+y^2z^2+x^2z^2
已知1=xy/x+y,2=yz/y+z,3=xz/x+z,求x+y+z的值
已知 xy/x+y=1,yz/y+z=2,xz/x+z=3求x+y+z=?
xy/x+y=1 yz/y+z=2 xz/x+z=3 求xyz/x+y+z=?
已知xy分之x+y=3,yz分之y+z=2,xz分之x+z=1,求x,y,z的值