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：灵鹊做题网作业帮分类：数学作业时间：2024/04/29 11:40:58

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﹚]

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